diff --git a/src/gui/src/MainWindow.cpp b/src/gui/src/MainWindow.cpp
index 7f3753ed..daf535a5 100644
--- a/src/gui/src/MainWindow.cpp
+++ b/src/gui/src/MainWindow.cpp
@@ -439,6 +439,8 @@ void MainWindow::checkFingerprint(const QString& line)
 	static bool messageBoxAlreadyShown = false;
 
 	if (!messageBoxAlreadyShown) {
+		stopSynergy();
+
 		messageBoxAlreadyShown = true;
 		QMessageBox::StandardButton fingerprintReply =
 			QMessageBox::information(
@@ -455,8 +457,6 @@ void MainWindow::checkFingerprint(const QString& line)
 			.arg(fingerprint),
 			QMessageBox::Yes | QMessageBox::No);
 
-		stopSynergy();
-
 		if (fingerprintReply == QMessageBox::Yes) {
 			// restart core process after trusting fingerprint.
 			Fingerprint::trustedServers().trust(fingerprint);