diff --git a/src/library/attribute_manager.cpp b/src/library/attribute_manager.cpp
index c022d701eb..b579c1c26e 100644
--- a/src/library/attribute_manager.cpp
+++ b/src/library/attribute_manager.cpp
@@ -272,7 +272,7 @@ void finalize_attribute_manager() {
     attribute_ext::finalize();
     delete g_key;
     delete g_incomp;
-    g_user_attribute_ext.release();
+    g_user_attribute_ext.reset();
     delete g_system_attributes;
 }
 }