diff --git a/win32/ioutil.h b/win32/ioutil.h
index 608e8a065ea..fe7c0895011 100644
--- a/win32/ioutil.h
+++ b/win32/ioutil.h
@@ -372,7 +372,7 @@ __forceinline static FILE *php_win32_ioutil_fopen(const char *patha, const char
 	free(pathw);
 	free(modew);
 
-	if (0 > ret) {
+	if (!ret) {
 		_set_errno(err);
 	}
 	return ret;