diff --git a/sapi/phpdbg/phpdbg.c b/sapi/phpdbg/phpdbg.c
index bc2bb08c702..4ef83be1b9f 100644
--- a/sapi/phpdbg/phpdbg.c
+++ b/sapi/phpdbg/phpdbg.c
@@ -493,7 +493,7 @@ PHP_FUNCTION(phpdbg_get_executable)
 	HashTable *files = &PHPDBG_G(file_sources);
 	HashTable files_tmp;
 
-	if (zend_parse_parameters(ZEND_NUM_ARGS(), "|H", &options) == FAILURE) {
+	if (zend_parse_parameters(ZEND_NUM_ARGS(), "|h", &options) == FAILURE) {
 		RETURN_THROWS();
 	}
 
@@ -587,7 +587,7 @@ PHP_FUNCTION(phpdbg_end_oplog)
 	bool by_function = false;
 	bool by_opcode = false;
 
-	if (zend_parse_parameters(ZEND_NUM_ARGS(), "|H", &options) == FAILURE) {
+	if (zend_parse_parameters(ZEND_NUM_ARGS(), "|h", &options) == FAILURE) {
 		RETURN_THROWS();
 	}