diff --git a/Zend/zend_reflection_api.c b/Zend/zend_reflection_api.c
index 33b479e0f5a..921d9bbe644 100644
--- a/Zend/zend_reflection_api.c
+++ b/Zend/zend_reflection_api.c
@@ -2900,7 +2900,7 @@ ZEND_METHOD(reflection_class, isInstantiable)
 
 	METHOD_NOTSTATIC_NUMPARAMS(reflection_class_ptr, 0);
 	GET_REFLECTION_OBJECT_PTR(ce);
-	if (ce->ce_flags & (ZEND_ACC_INTERFACE | ZEND_ACC_ABSTRACT)) {
+	if (ce->ce_flags & (ZEND_ACC_INTERFACE | ZEND_ACC_IMPLICIT_ABSTRACT_CLASS | ZEND_ACC_EXPLICIT_ABSTRACT_CLASS)) {
 		RETURN_FALSE;
 	}
 
diff --git a/ext/reflection/php_reflection.c b/ext/reflection/php_reflection.c
index 33b479e0f5a..921d9bbe644 100644
--- a/ext/reflection/php_reflection.c
+++ b/ext/reflection/php_reflection.c
@@ -2900,7 +2900,7 @@ ZEND_METHOD(reflection_class, isInstantiable)
 
 	METHOD_NOTSTATIC_NUMPARAMS(reflection_class_ptr, 0);
 	GET_REFLECTION_OBJECT_PTR(ce);
-	if (ce->ce_flags & (ZEND_ACC_INTERFACE | ZEND_ACC_ABSTRACT)) {
+	if (ce->ce_flags & (ZEND_ACC_INTERFACE | ZEND_ACC_IMPLICIT_ABSTRACT_CLASS | ZEND_ACC_EXPLICIT_ABSTRACT_CLASS)) {
 		RETURN_FALSE;
 	}