diff --git a/Zend/zend_virtual_cwd.h b/Zend/zend_virtual_cwd.h
index 3c432de9add..8bc0d272b75 100644
--- a/Zend/zend_virtual_cwd.h
+++ b/Zend/zend_virtual_cwd.h
@@ -70,7 +70,7 @@ typedef unsigned short mode_t;
 #define IS_UNC_PATH(path, len) \
 	(len >= 2 && IS_SLASH(path[0]) && IS_SLASH(path[1]))
 #define IS_ABSOLUTE_PATH(path, len) \
-	(len >= 2 && ((isalpha(path[0]) && path[1] == ':') || IS_UNC_PATH(path, len)))
+	(len >= 2 && ((/* is local */isalpha(path[0]) && path[1] == ':') || /* is UNC */IS_SLASH(path[0]) && IS_SLASH(path[1])))
 
 #elif defined(NETWARE)
 #ifdef HAVE_DIRENT_H