diff --git a/ext/standard/basic_functions.c b/ext/standard/basic_functions.c
index 0f00612db21..a31d83ef317 100644
--- a/ext/standard/basic_functions.c
+++ b/ext/standard/basic_functions.c
@@ -2678,7 +2678,7 @@ PHP_FUNCTION(ini_restore)
 }
 /* }}} */
 
-/* {{{ proto string set_include_path(string varname, string newvalue)
+/* {{{ proto string set_include_path(string new_include_path)
    Sets the include_path configuration option */
 
 PHP_FUNCTION(set_include_path)