diff --git a/src/OutlookGoogleCalendarSync/Forms/MainForm.cs b/src/OutlookGoogleCalendarSync/Forms/MainForm.cs
index 847fd6bb..1fbbc17e 100644
--- a/src/OutlookGoogleCalendarSync/Forms/MainForm.cs
+++ b/src/OutlookGoogleCalendarSync/Forms/MainForm.cs
@@ -1753,6 +1753,8 @@ private void cbCloudLogging_CheckStateChanged(object sender, EventArgs e) {
         }
 
         private void cbTelemetryDisabled_CheckedChanged(object sender, EventArgs e) {
+            if (!this.Visible) return;
+
             if (!cbTelemetryDisabled.Checked) {
                 Settings.Instance.TelemetryDisabled = cbTelemetryDisabled.Checked;
                 return;