diff --git a/main/php_variables.c b/main/php_variables.c
index 1aad77c3781..432c3df3fec 100644
--- a/main/php_variables.c
+++ b/main/php_variables.c
@@ -296,7 +296,7 @@ SAPI_API SAPI_TREAT_DATA_FUNC(php_default_treat_data)
 			separator = (char *) estrdup(PG(arg_separator).input);
 			break;
 		case PARSE_COOKIE:
-			separator = ";\0";
+			separator = ";,\0"; /* Cookies can be separated with , or ; */
 			break;
 	}