diff --git a/ext/standard/var_unserializer.c b/ext/standard/var_unserializer.c
index 003bac9..ed6a69c 100644
--- a/ext/standard/var_unserializer.c
+++ b/ext/standard/var_unserializer.c
@@ -396,7 +396,7 @@ static inline long object_common1(UNSERIALIZE_PARAMETER, zend_class_entry *ce)
 
 	(*p) += 2;
 	
-	if (ce->serialize == NULL) {
+	if (ce->serialize == NULL || ZEND_INTERNAL_CLASS != ce->type) {
 		object_init_ex(*rval, ce);
 	} else {
 		/* If this class implements Serializable, it should not land here but in object_custom(). The passed string
diff --git a/ext/standard/var_unserializer.re b/ext/standard/var_unserializer.re
index b3f5d29..b5f092b 100644
--- a/ext/standard/var_unserializer.re
+++ b/ext/standard/var_unserializer.re
@@ -400,7 +400,7 @@ static inline long object_common1(UNSERIALIZE_PARAMETER, zend_class_entry *ce)
 
 	(*p) += 2;
 	
-	if (ce->serialize == NULL) {
+	if (ce->serialize == NULL || ZEND_INTERNAL_CLASS != ce->type) {
 		object_init_ex(*rval, ce);
 	} else {
 		/* If this class implements Serializable, it should not land here but in object_custom(). The passed string