diff --git a/tests/integration/clientv3/lease/lease_test.go b/tests/integration/clientv3/lease/lease_test.go
index f23ed672865a..e8a949f7d6df 100644
--- a/tests/integration/clientv3/lease/lease_test.go
+++ b/tests/integration/clientv3/lease/lease_test.go
@@ -407,7 +407,7 @@ func TestLeaseRevokeNewAfterClose(t *testing.T) {
 		t.Fatal("le.Revoke took too long")
 	case errMsg := <-errMsgCh:
 		if errMsg != "" {
-			t.Fatalf(errMsg)
+			t.Fatalf("%v", errMsg)
 		}
 	}
 }
diff --git a/tests/integration/metrics_test.go b/tests/integration/metrics_test.go
index 836b070b14d3..e76c4e0e6844 100644
--- a/tests/integration/metrics_test.go
+++ b/tests/integration/metrics_test.go
@@ -136,7 +136,7 @@ func testMetricDbSizeDefrag(t *testing.T, name string) {
 		}
 		retry++
 		if retry >= maxRetry {
-			t.Fatalf(err.Error())
+			t.Fatalf("%v", err.Error())
 		}
 	}