diff --git a/ext/filter/filter.c b/ext/filter/filter.c
index 0533788ad94..a876cc9c3c3 100644
--- a/ext/filter/filter.c
+++ b/ext/filter/filter.c
@@ -694,7 +694,7 @@ PHP_FUNCTION(input_get_args)
 	zval       *array_ptr = NULL;
 	zval **element;
 
-	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "la|a", &args_from, &args_array, &values) == FAILURE) {
+	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "la|a/", &args_from, &args_array, &values) == FAILURE) {
 		RETURN_FALSE;
 	}