diff --git a/ext/standard/file.c b/ext/standard/file.c
index d8b98228ef4..5a208d19c50 100644
--- a/ext/standard/file.c
+++ b/ext/standard/file.c
@@ -170,6 +170,7 @@ static FILE *php_do_open_temporary_file(char *path, const char *pfx, char **open
 	char *trailing_slash;
 	FILE *fp;
 	char *opened_path;
+	int fd;
 
 	if (!path) {
 		return NULL;