--- a/src/core/ngx_core.h
+++ b/src/core/ngx_core.h
@@ -5,19 +5,25 @@
 #include <ngx_types.h>
 #include <ngx_time.h>
 #include <ngx_socket.h>
-#include <ngx_files.h>
 #include <ngx_errno.h>
 #include <ngx_process.h>
 
+typedef struct ngx_module_s      ngx_module_t;
+typedef struct ngx_conf_s        ngx_conf_t;
+typedef struct ngx_command_s     ngx_command_t;
+
+typedef struct ngx_file_s        ngx_file_t;
+typedef struct ngx_event_s       ngx_event_t;
 typedef struct ngx_connection_s  ngx_connection_t;
-typedef struct ngx_event_s       ngx_event_t;
 
 #include <ngx_log.h>
 #include <ngx_alloc.h>
+#include <ngx_string.h>
 #include <ngx_hunk.h>
 #include <ngx_array.h>
-#include <ngx_string.h>
+#include <ngx_table.h>
 #include <ngx_file.h>
+#include <ngx_files.h>
 #include <ngx_inet.h>
 #include <ngx_conf_file.h>
 #include <ngx_os_init.h>