diff --git a/ext/standard/versioning.c b/ext/standard/versioning.c
index ef0240e6304..20296d3700d 100644
--- a/ext/standard/versioning.c
+++ b/ext/standard/versioning.c
@@ -204,7 +204,8 @@ php_version_compare(const char *orig_ver1, const char *orig_ver2)
 }
 
 /* }}} */
-/* {{{ proto int version_compare(string ver1, string ver2 [, string oper])
+
+/* {{{ proto int version_compare(string ver1, string ver2 [, string oper]) U
   Compares two "PHP-standardized" version number strings */
 
 PHP_FUNCTION(version_compare)