diff --git a/src/os/unix/ngx_files.h b/src/os/unix/ngx_files.h
index 7d83b04..8608e17 100644
--- a/src/os/unix/ngx_files.h
+++ b/src/os/unix/ngx_files.h
@@ -158,7 +158,7 @@
 
 #define ngx_realpath(p, r)       realpath((char *) p, (char *) r)
 #define ngx_realpath_n           "realpath()"
-#define ngx_getcwd(buf, size)    (getcwd(buf, size) != NULL)
+#define ngx_getcwd(buf, size)    (getcwd((char *) buf, size) != NULL)
 #define ngx_getcwd_n             "getcwd()"
 #define ngx_path_separator(c)    ((c) == '/')
 
diff --git a/src/os/win32/ngx_files.h b/src/os/win32/ngx_files.h
index 1e2c630..2abaaf5 100644
--- a/src/os/win32/ngx_files.h
+++ b/src/os/win32/ngx_files.h
@@ -152,13 +152,12 @@
 
 char *ngx_realpath(u_char *path, u_char *resolved);
 #define ngx_realpath_n              ""
-#define ngx_getcwd(buf, size)       GetCurrentDirectory(size, buf)
+#define ngx_getcwd(buf, size)       GetCurrentDirectory(size, (char *) buf)
 #define ngx_getcwd_n                "GetCurrentDirectory()"
 #define ngx_path_separator(c)       ((c) == '/' || (c) == '\\')
 
 #define NGX_MAX_PATH                MAX_PATH
 
-
 #define NGX_DIR_MASK                (u_char *) "/*"
 #define NGX_DIR_MASK_LEN            2