diff --git a/main/php.h b/main/php.h
index 326bbfc7e88..11ae1227d9f 100644
--- a/main/php.h
+++ b/main/php.h
@@ -291,7 +291,7 @@ PHPAPI int cfg_get_string(char *varname, char **result);
 #define PUTS_H(str)					php_header_write((str), strlen((str)))
 #define PUTC_H(c)					(php_header_write(&(c), 1), (c))
 
-/* #define VIRTUAL_DIR */
+#define VIRTUAL_DIR
 #include "php_virtual_cwd.h"
 
 /* Virtual current directory support */