diff --git a/src/container/heap/heap_test.go b/src/container/heap/heap_test.go
index d41110422e..f19f9cfa74 100644
--- a/src/container/heap/heap_test.go
+++ b/src/container/heap/heap_test.go
@@ -33,6 +33,7 @@ func (h *myHeap) Push(v interface{}) {
 }
 
 func (h myHeap) verify(t *testing.T, i int) {
+	t.Helper()
 	n := h.Len()
 	j1 := 2*i + 1
 	j2 := 2*i + 2