diff --git a/src/core/ngx_conf_file.c b/src/core/ngx_conf_file.c
index 83c1073..689b7e7 100644
--- a/src/core/ngx_conf_file.c
+++ b/src/core/ngx_conf_file.c
@@ -507,7 +507,7 @@
             }
 
             if (len) {
-                ngx_memcpy(b->start, start, len);
+                ngx_memmove(b->start, start, len);
             }
 
             size = (ssize_t) (file_size - cf->conf_file->file.offset);
diff --git a/src/core/ngx_string.h b/src/core/ngx_string.h
index 3f1e91e..2030988 100644
--- a/src/core/ngx_string.h
+++ b/src/core/ngx_string.h
@@ -135,6 +135,10 @@
 #endif
 
 
+#define ngx_memmove(dst, src, n)   (void) memmove(dst, src, n)
+#define ngx_movemem(dst, src, n)   (((u_char *) memmove(dst, src, n)) + (n))
+
+
 /* msvc and icc7 compile memcmp() to the inline loop */
 #define ngx_memcmp(s1, s2, n)  memcmp((const char *) s1, (const char *) s2, n)
 
diff --git a/src/http/modules/ngx_http_auth_basic_module.c b/src/http/modules/ngx_http_auth_basic_module.c
index a6b95fa..c6b7f92 100644
--- a/src/http/modules/ngx_http_auth_basic_module.c
+++ b/src/http/modules/ngx_http_auth_basic_module.c
@@ -248,7 +248,7 @@
 
         if (state == sw_passwd) {
             left = left + n - passwd;
-            ngx_memcpy(buf, &buf[passwd], left);
+            ngx_memmove(buf, &buf[passwd], left);
             passwd = 0;
 
         } else {
diff --git a/src/http/modules/ngx_http_geo_module.c b/src/http/modules/ngx_http_geo_module.c
index 6ad08b9..e60f1f4 100644
--- a/src/http/modules/ngx_http_geo_module.c
+++ b/src/http/modules/ngx_http_geo_module.c
@@ -685,7 +685,7 @@
 
                 range = a->elts;
 
-                ngx_memcpy(&range[i + 2], &range[i + 1],
+                ngx_memmove(&range[i + 2], &range[i + 1],
                            (a->nelts - 2 - i) * sizeof(ngx_http_geo_range_t));
 
                 range[i + 1].start = (u_short) s;
@@ -724,7 +724,7 @@
 
                 range = a->elts;
 
-                ngx_memcpy(&range[i + 3], &range[i + 1],
+                ngx_memmove(&range[i + 3], &range[i + 1],
                            (a->nelts - 3 - i) * sizeof(ngx_http_geo_range_t));
 
                 range[i + 2].start = (u_short) (e + 1);
@@ -752,7 +752,7 @@
 
                 range = a->elts;
 
-                ngx_memcpy(&range[i + 1], &range[i],
+                ngx_memmove(&range[i + 1], &range[i],
                            (a->nelts - 1 - i) * sizeof(ngx_http_geo_range_t));
 
                 range[i + 1].start = (u_short) (e + 1);
@@ -776,7 +776,7 @@
 
                 range = a->elts;
 
-                ngx_memcpy(&range[i + 2], &range[i + 1],
+                ngx_memmove(&range[i + 2], &range[i + 1],
                            (a->nelts - 2 - i) * sizeof(ngx_http_geo_range_t));
 
                 range[i + 1].start = (u_short) s;
@@ -861,7 +861,7 @@
             if (s == (ngx_uint_t) range[i].start
                 && e == (ngx_uint_t) range[i].end)
             {
-                ngx_memcpy(&range[i], &range[i + 1],
+                ngx_memmove(&range[i], &range[i + 1],
                            (a->nelts - 1 - i) * sizeof(ngx_http_geo_range_t));
 
                 a->nelts--;
diff --git a/src/http/modules/ngx_http_ssi_filter_module.c b/src/http/modules/ngx_http_ssi_filter_module.c
index 994efc4..75a7156 100644
--- a/src/http/modules/ngx_http_ssi_filter_module.c
+++ b/src/http/modules/ngx_http_ssi_filter_module.c
@@ -1902,7 +1902,7 @@
 
     len = (uri->data + uri->len) - src;
     if (len) {
-        dst = ngx_copy(dst, src, len);
+        dst = ngx_movemem(dst, src, len);
     }
 
     uri->len = dst - uri->data;
diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
index c8edf95..06eb0b3 100644
--- a/src/http/ngx_http_core_module.c
+++ b/src/http/ngx_http_core_module.c
@@ -1225,7 +1225,7 @@
             *e.pos = '\0';
 
             if (alias && ngx_strncmp(name, clcf->name.data, alias) == 0) {
-                ngx_memcpy(name, name + alias, len - alias);
+                ngx_memmove(name, name + alias, len - alias);
                 path.len -= alias;
             }
         }
diff --git a/src/http/ngx_http_script.c b/src/http/ngx_http_script.c
index ef69155..8b861ce 100644
--- a/src/http/ngx_http_script.c
+++ b/src/http/ngx_http_script.c
@@ -1089,7 +1089,7 @@
                          NGX_UNESCAPE_REDIRECT);
 
         if (src < e->pos) {
-            dst = ngx_copy(dst, src, e->pos - src);
+            dst = ngx_movemem(dst, src, e->pos - src);
         }
 
         e->pos = dst;