diff --git a/core/task_test.go b/core/task_medium_test.go
similarity index 99%
rename from core/task_test.go
rename to core/task_medium_test.go
index ee1fce24e..29b794b92 100644
--- a/core/task_test.go
+++ b/core/task_medium_test.go
@@ -1,4 +1,4 @@
-// +build small
+// +build medium
 
 /*
 http://www.apache.org/licenses/LICENSE-2.0.txt