1 files changed, 1 insertions, 1 deletions
diff --git a/phpBB/phpbb/extension/base.php b/phpBB/phpbb/extension/base.php
index 5ce6983edf..40bd349c4d 100644
--- a/phpBB/phpbb/extension/base.php
+++ b/phpBB/phpbb/extension/base.php
@@ -152,7 +152,7 @@ class base implements \phpbb\extension\extension_interface
 				if (class_exists($migration))
 				{
 					$reflector = new \ReflectionClass($migration);
-					if ($reflector->isSubclassOf('\phpbb\db\migration\migration'))
+					if ($reflector->isSubclassOf('\phpbb\db\migration\migration') && $reflector->isInstantiable())
 					{
 						continue;
 					}