diff --git a/api4/config_test.go b/api4/config_test.go
index ee36fc3c59..e4353e3c3d 100644
--- a/api4/config_test.go
+++ b/api4/config_test.go
@@ -475,6 +475,8 @@ func TestUpdateConfigDiffInAuditRecord(t *testing.T) {
 	err = th.Server.Log.Flush(context.Background())
 	require.NoError(t, err)
 
+	require.NoError(t, logFile.Sync())
+
 	data, err := ioutil.ReadAll(logFile)
 	require.NoError(t, err)
 	require.NotEmpty(t, data)