diff --git a/server/metrics/metrics_test.go b/server/metrics/metrics_test.go
index 4841ecd..c17e4d0 100644
--- a/server/metrics/metrics_test.go
+++ b/server/metrics/metrics_test.go
@@ -32,6 +32,6 @@ func TestCounter(t *testing.T) {
 	counterStart := c.GetStarttime()
 
 	if counterStart.Sub(starttime) > time.Millisecond {
-		t.Error("counter's starttime was innaccurate")
+		t.Errorf("counter's starttime was innaccurate %v", counterStart.Sub(starttime))
 	}
 }