diff --git a/src/core/ngx_conf_file.h b/src/core/ngx_conf_file.h
index 9cd580643..ed2d2ba9d 100644
--- a/src/core/ngx_conf_file.h
+++ b/src/core/ngx_conf_file.h
@@ -49,7 +49,7 @@
 #define NGX_DIRECT_CONF      0x00010000
 
 #define NGX_MAIN_CONF        0x01000000
-#define NGX_ANY_CONF         0x1F000000
+#define NGX_ANY_CONF         0xFF000000