diff --git a/src/core/ngx_times.c b/src/core/ngx_times.c
index 745a4bd..6a5808f 100644
--- a/src/core/ngx_times.c
+++ b/src/core/ngx_times.c
@@ -287,7 +287,7 @@
 
     days = n / 86400;
 
-    /* Jaunary 1, 1970 was Thursday */
+    /* January 1, 1970 was Thursday */
 
     wday = (4 + days) % 7;
 
diff --git a/src/event/ngx_event.h b/src/event/ngx_event.h
index aa2183a..8cc87eb 100644
--- a/src/event/ngx_event.h
+++ b/src/event/ngx_event.h
@@ -83,7 +83,7 @@
 #endif
 
 #if (NGX_WIN32)
-    /* setsockopt(SO_UPDATE_ACCEPT_CONTEXT) was succesfull */
+    /* setsockopt(SO_UPDATE_ACCEPT_CONTEXT) was successful */
     unsigned         accept_context_updated:1;
 #endif
 
diff --git a/src/event/ngx_event_openssl.c b/src/event/ngx_event_openssl.c
index 93d38a1..6b9dba1 100644
--- a/src/event/ngx_event_openssl.c
+++ b/src/event/ngx_event_openssl.c
@@ -842,7 +842,7 @@
         case NGX_ERROR:
             c->read->error = 1;
 
-            /* fall thruogh */
+            /* fall through */
 
         case NGX_AGAIN:
             return c->ssl->last;
diff --git a/src/event/ngx_event_pipe.c b/src/event/ngx_event_pipe.c
index b959ff4..c2c7983 100644
--- a/src/event/ngx_event_pipe.c
+++ b/src/event/ngx_event_pipe.c
@@ -969,7 +969,7 @@
         return NGX_OK;
     }
 
-    /* the first free buf is partialy filled, thus add the free buf after it */
+    /* the first free buf is partially filled, thus add the free buf after it */
 
     cl->next = p->free_raw_bufs->next;
     p->free_raw_bufs->next = cl;
diff --git a/src/http/modules/ngx_http_autoindex_module.c b/src/http/modules/ngx_http_autoindex_module.c
index 9b54d0c..450a48e 100644
--- a/src/http/modules/ngx_http_autoindex_module.c
+++ b/src/http/modules/ngx_http_autoindex_module.c
@@ -95,8 +95,8 @@
     NULL,                                  /* create server configuration */
     NULL,                                  /* merge server configuration */
 
-    ngx_http_autoindex_create_loc_conf,    /* create location configration */
-    ngx_http_autoindex_merge_loc_conf      /* merge location configration */
+    ngx_http_autoindex_create_loc_conf,    /* create location configuration */
+    ngx_http_autoindex_merge_loc_conf      /* merge location configuration */
 };
 
 
diff --git a/src/http/modules/ngx_http_index_module.c b/src/http/modules/ngx_http_index_module.c
index 6bf4b04..cfe4ba6 100644
--- a/src/http/modules/ngx_http_index_module.c
+++ b/src/http/modules/ngx_http_index_module.c
@@ -62,8 +62,8 @@
     NULL,                                  /* create server configuration */
     NULL,                                  /* merge server configuration */
 
-    ngx_http_index_create_loc_conf,        /* create location configration */
-    ngx_http_index_merge_loc_conf          /* merge location configration */
+    ngx_http_index_create_loc_conf,        /* create location configuration */
+    ngx_http_index_merge_loc_conf          /* merge location configuration */
 };
 
 
diff --git a/src/http/modules/ngx_http_limit_conn_module.c b/src/http/modules/ngx_http_limit_conn_module.c
index c119945..c23c046 100644
--- a/src/http/modules/ngx_http_limit_conn_module.c
+++ b/src/http/modules/ngx_http_limit_conn_module.c
@@ -118,8 +118,8 @@
     NULL,                                  /* create server configuration */
     NULL,                                  /* merge server configuration */
 
-    ngx_http_limit_conn_create_conf,       /* create location configration */
-    ngx_http_limit_conn_merge_conf         /* merge location configration */
+    ngx_http_limit_conn_create_conf,       /* create location configuration */
+    ngx_http_limit_conn_merge_conf         /* merge location configuration */
 };
 
 
diff --git a/src/http/modules/ngx_http_limit_req_module.c b/src/http/modules/ngx_http_limit_req_module.c
index f1698a3..18db715 100644
--- a/src/http/modules/ngx_http_limit_req_module.c
+++ b/src/http/modules/ngx_http_limit_req_module.c
@@ -121,8 +121,8 @@
     NULL,                                  /* create server configuration */
     NULL,                                  /* merge server configuration */
 
-    ngx_http_limit_req_create_conf,        /* create location configration */
-    ngx_http_limit_req_merge_conf          /* merge location configration */
+    ngx_http_limit_req_create_conf,        /* create location configuration */
+    ngx_http_limit_req_merge_conf          /* merge location configuration */
 };
 
 
diff --git a/src/http/modules/ngx_http_log_module.c b/src/http/modules/ngx_http_log_module.c
index 737a772..2452f23 100644
--- a/src/http/modules/ngx_http_log_module.c
+++ b/src/http/modules/ngx_http_log_module.c
@@ -161,8 +161,8 @@
     NULL,                                  /* create server configuration */
     NULL,                                  /* merge server configuration */
 
-    ngx_http_log_create_loc_conf,          /* create location configration */
-    ngx_http_log_merge_loc_conf            /* merge location configration */
+    ngx_http_log_create_loc_conf,          /* create location configuration */
+    ngx_http_log_merge_loc_conf            /* merge location configuration */
 };
 
 
@@ -377,10 +377,10 @@
 
     if (!r->root_tested) {
 
-        /* test root directory existance */
+        /* test root directory existence */
 
         if (ngx_http_map_uri_to_path(r, &path, &root, 0) == NULL) {
-            /* simulate successfull logging */
+            /* simulate successful logging */
             return len;
         }
 
@@ -404,14 +404,14 @@
             != NGX_OK)
         {
             if (of.err == 0) {
-                /* simulate successfull logging */
+                /* simulate successful logging */
                 return len;
             }
 
             ngx_log_error(NGX_LOG_ERR, r->connection->log, of.err,
                           "testing \"%s\" existence failed", path.data);
 
-            /* simulate successfull logging */
+            /* simulate successful logging */
             return len;
         }
 
@@ -419,7 +419,7 @@
             ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ENOTDIR,
                           "testing \"%s\" existence failed", path.data);
 
-            /* simulate successfull logging */
+            /* simulate successful logging */
             return len;
         }
     }
@@ -428,7 +428,7 @@
                             script->values->elts)
         == NULL)
     {
-        /* simulate successfull logging */
+        /* simulate successful logging */
         return len;
     }
 
@@ -457,7 +457,7 @@
     {
         ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
                       "%s \"%s\" failed", of.failed, log.data);
-        /* simulate successfull logging */
+        /* simulate successful logging */
         return len;
     }
 
diff --git a/src/http/modules/ngx_http_memcached_module.c b/src/http/modules/ngx_http_memcached_module.c
index be45d4e..5077ded 100644
--- a/src/http/modules/ngx_http_memcached_module.c
+++ b/src/http/modules/ngx_http_memcached_module.c
@@ -115,8 +115,8 @@
     NULL,                                  /* create server configuration */
     NULL,                                  /* merge server configuration */
 
-    ngx_http_memcached_create_loc_conf,    /* create location configration */
-    ngx_http_memcached_merge_loc_conf      /* merge location configration */
+    ngx_http_memcached_create_loc_conf,    /* create location configuration */
+    ngx_http_memcached_merge_loc_conf      /* merge location configuration */
 };
 
 
diff --git a/src/http/modules/ngx_http_proxy_module.c b/src/http/modules/ngx_http_proxy_module.c
index f2bff3d..678c70e 100644
--- a/src/http/modules/ngx_http_proxy_module.c
+++ b/src/http/modules/ngx_http_proxy_module.c
@@ -530,8 +530,8 @@
     NULL,                                  /* create server configuration */
     NULL,                                  /* merge server configuration */
 
-    ngx_http_proxy_create_loc_conf,        /* create location configration */
-    ngx_http_proxy_merge_loc_conf          /* merge location configration */
+    ngx_http_proxy_create_loc_conf,        /* create location configuration */
+    ngx_http_proxy_merge_loc_conf          /* merge location configuration */
 };
 
 
diff --git a/src/http/modules/ngx_http_random_index_module.c b/src/http/modules/ngx_http_random_index_module.c
index 67f34f7..b0f0e08 100644
--- a/src/http/modules/ngx_http_random_index_module.c
+++ b/src/http/modules/ngx_http_random_index_module.c
@@ -49,8 +49,8 @@
     NULL,                                  /* create server configuration */
     NULL,                                  /* merge server configuration */
 
-    ngx_http_random_index_create_loc_conf, /* create location configration */
-    ngx_http_random_index_merge_loc_conf   /* merge location configration */
+    ngx_http_random_index_create_loc_conf, /* create location configuration */
+    ngx_http_random_index_merge_loc_conf   /* merge location configuration */
 };
 
 
diff --git a/src/http/modules/ngx_http_rewrite_module.c b/src/http/modules/ngx_http_rewrite_module.c
index 98da67f..74d26e5 100644
--- a/src/http/modules/ngx_http_rewrite_module.c
+++ b/src/http/modules/ngx_http_rewrite_module.c
@@ -112,8 +112,8 @@
     NULL,                                  /* create server configuration */
     NULL,                                  /* merge server configuration */
 
-    ngx_http_rewrite_create_loc_conf,      /* create location configration */
-    ngx_http_rewrite_merge_loc_conf        /* merge location configration */
+    ngx_http_rewrite_create_loc_conf,      /* create location configuration */
+    ngx_http_rewrite_merge_loc_conf        /* merge location configuration */
 };
 
 
diff --git a/src/http/modules/ngx_http_userid_filter_module.c b/src/http/modules/ngx_http_userid_filter_module.c
index 8713dd6..1487c09 100644
--- a/src/http/modules/ngx_http_userid_filter_module.c
+++ b/src/http/modules/ngx_http_userid_filter_module.c
@@ -166,8 +166,8 @@
     NULL,                                  /* create server configuration */
     NULL,                                  /* merge server configuration */
 
-    ngx_http_userid_create_conf,           /* create location configration */
-    ngx_http_userid_merge_conf             /* merge location configration */
+    ngx_http_userid_create_conf,           /* create location configuration */
+    ngx_http_userid_merge_conf             /* merge location configuration */
 };
 
 
diff --git a/src/http/ngx_http_parse_time.c b/src/http/ngx_http_parse_time.c
index 7d3aeae..3801df2 100644
--- a/src/http/ngx_http_parse_time.c
+++ b/src/http/ngx_http_parse_time.c
@@ -242,7 +242,7 @@
         year -= 1;
     }
 
-    /* Gauss' formula for Grigorian days since March 1, 1 BC */
+    /* Gauss' formula for Gregorian days since March 1, 1 BC */
 
     time = (uint64_t) (
             /* days in years including leap years since March 1, 1 BC */
diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
index 4504d98..7e368c1 100644
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -2293,7 +2293,7 @@
     }
 
     if (ngx_event_flags & NGX_USE_AIO_EVENT) {
-        /* the posted aio operation may currupt a shadow buffer */
+        /* the posted aio operation may corrupt a shadow buffer */
         p->single_buf = 1;
     }
 
diff --git a/src/mail/ngx_mail_pop3_handler.c b/src/mail/ngx_mail_pop3_handler.c
index 0a07328..51bc257 100644
--- a/src/mail/ngx_mail_pop3_handler.c
+++ b/src/mail/ngx_mail_pop3_handler.c
@@ -218,7 +218,7 @@
 
             break;
 
-        /* suppress warinings */
+        /* suppress warnings */
         case ngx_pop3_passwd:
             break;
 
diff --git a/src/os/unix/ngx_darwin_sendfile_chain.c b/src/os/unix/ngx_darwin_sendfile_chain.c
index c869765..ec247d2 100644
--- a/src/os/unix/ngx_darwin_sendfile_chain.c
+++ b/src/os/unix/ngx_darwin_sendfile_chain.c
@@ -173,7 +173,7 @@
 
         if (file && header.nelts == 0) {
 
-            /* create the tailer iovec and coalesce the neighbouring bufs */
+            /* create the trailer iovec and coalesce the neighbouring bufs */
 
             prev = NULL;
             iov = NULL;
diff --git a/src/os/unix/ngx_freebsd_sendfile_chain.c b/src/os/unix/ngx_freebsd_sendfile_chain.c
index 610697d..26b3267 100644
--- a/src/os/unix/ngx_freebsd_sendfile_chain.c
+++ b/src/os/unix/ngx_freebsd_sendfile_chain.c
@@ -178,7 +178,7 @@
 
         if (file) {
 
-            /* create the tailer iovec and coalesce the neighbouring bufs */
+            /* create the trailer iovec and coalesce the neighbouring bufs */
 
             prev = NULL;
             iov = NULL;
diff --git a/src/os/unix/ngx_user.c b/src/os/unix/ngx_user.c
index cb452e6..27f990e 100644
--- a/src/os/unix/ngx_user.c
+++ b/src/os/unix/ngx_user.c
@@ -67,7 +67,7 @@
 
 #if (NGX_THREADS && NGX_NONREENTRANT_CRYPT)
 
-    /* crypt() is a time consuming funtion, so we only try to lock */
+    /* crypt() is a time consuming function, so we only try to lock */
 
     if (ngx_mutex_trylock(ngx_crypt_mutex) != NGX_OK) {
         return NGX_AGAIN;
diff --git a/src/os/win32/ngx_service.c b/src/os/win32/ngx_service.c
index d8b41a9..5bed9a7 100644
--- a/src/os/win32/ngx_service.c
+++ b/src/os/win32/ngx_service.c
@@ -20,7 +20,7 @@
 {
     /* primary thread */
 
-    /* StartServiceCtrlDispatcher() shouxpdl be called within 30 seconds */
+    /* StartServiceCtrlDispatcher() should be called within 30 seconds */
 
     if (StartServiceCtrlDispatcher(st) == 0) {
         ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,