diff --git a/Zend/zend_reflection_api.c b/Zend/zend_reflection_api.c
index e1554446f1d..6d2b6de3c2b 100644
--- a/Zend/zend_reflection_api.c
+++ b/Zend/zend_reflection_api.c
@@ -1752,11 +1752,11 @@ void reflection_class_object_ctor(INTERNAL_FUNCTION_PARAMETERS, int is_object)
 	zend_class_entry **ce;
 
 	if (is_object) {
-		if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &argument) == FAILURE) {
+		if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "o", &argument) == FAILURE) {
 			return;
 		}
 	} else {
-		if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "o", &argument) == FAILURE) {
+		if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &argument) == FAILURE) {
 			return;
 		}
 	}
diff --git a/ext/reflection/php_reflection.c b/ext/reflection/php_reflection.c
index e1554446f1d..6d2b6de3c2b 100644
--- a/ext/reflection/php_reflection.c
+++ b/ext/reflection/php_reflection.c
@@ -1752,11 +1752,11 @@ void reflection_class_object_ctor(INTERNAL_FUNCTION_PARAMETERS, int is_object)
 	zend_class_entry **ce;
 
 	if (is_object) {
-		if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &argument) == FAILURE) {
+		if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "o", &argument) == FAILURE) {
 			return;
 		}
 	} else {
-		if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "o", &argument) == FAILURE) {
+		if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &argument) == FAILURE) {
 			return;
 		}
 	}