diff --git a/smbclient.c b/smbclient.c
index 8186724..6118a21 100644
--- a/smbclient.c
+++ b/smbclient.c
@@ -1554,7 +1554,7 @@ PHP_FUNCTION(smbclient_getxattr)
 
 	if (retsize == 0) { /* success, since 4.16.9 and 4.17.5 */
 		retsize = strlen(values);
-	} else if (retsize > xattr_size) { /* time-of-check, time-of-use error */
+	} else if (retsize > xattr_size) { /* time-of-check, time-of-use error, never happen as recent versions return -1*/
 		retsize = xattr_size;
 	} else if (retsize < 0) {
 		efree(values);