diff --git a/ext/standard/basic_functions.c b/ext/standard/basic_functions.c
index 573b6d48c7d..cbfe5455b8c 100644
--- a/ext/standard/basic_functions.c
+++ b/ext/standard/basic_functions.c
@@ -919,7 +919,7 @@ PHP_FUNCTION(constant)
 /* }}} */
 
 
-/* {{{ proto int ip2long(string ip_address)
+/* {{{ proto string ip2long(string ip_address)
    Converts a string containing an (IPv4) Internet Protocol dotted address into a proper address */
 PHP_FUNCTION(ip2long)
 {