diff --git a/src/mngt/ocf_mngt_core.c b/src/mngt/ocf_mngt_core.c
index ea2f4799..38f121e6 100644
--- a/src/mngt/ocf_mngt_core.c
+++ b/src/mngt/ocf_mngt_core.c
@@ -643,7 +643,9 @@ static void ocf_mngt_cache_remove_core_finish(ocf_pipeline_t pipeline,
 				context->core_name);
 	}
 
-	ocf_cleaner_refcnt_unfreeze(cache);
+	if (ocf_cache_is_device_attached(cache)) {
+		ocf_cleaner_refcnt_unfreeze(cache);
+	}
 
 	context->cmpl(context->priv, error);
 
@@ -826,7 +828,9 @@ static void ocf_mngt_cache_detach_core_finish(ocf_pipeline_t pipeline,
 				context->core_name);
 	}
 
-	ocf_cleaner_refcnt_unfreeze(context->cache);
+	if (ocf_cache_is_device_attached(cache)) {
+		ocf_cleaner_refcnt_unfreeze(cache);
+	}
 
 	context->cmpl(context->priv, error);