diff --git a/syncplay/ui/gui.py b/syncplay/ui/gui.py
index dd5dfc3..8c8c088 100755
--- a/syncplay/ui/gui.py
+++ b/syncplay/ui/gui.py
@@ -183,10 +183,11 @@ class CertificateDialog(QtWidgets.QDialog):
         descLabel = QtWidgets.QLabel(getMessage("tls-dialog-desc-label").format(tlsData["subject"]))
         connDataLabel = QtWidgets.QLabel(getMessage("tls-dialog-connection-label").format(tlsData["protocolVersion"], tlsData["cipher"]))
         certDataLabel = QtWidgets.QLabel(getMessage("tls-dialog-certificate-label").format(tlsData["issuer"], tlsData["expires"]))
-        statusLabel.setFont(QtGui.QFont("Helvetica", 12))
-        descLabel.setFont(QtGui.QFont("Helvetica", 12))
-        connDataLabel.setFont(QtGui.QFont("Helvetica", 12))
-        certDataLabel.setFont(QtGui.QFont("Helvetica", 12))
+        if isMacOS():
+            statusLabel.setFont(QtGui.QFont("Helvetica", 12))
+            descLabel.setFont(QtGui.QFont("Helvetica", 12))
+            connDataLabel.setFont(QtGui.QFont("Helvetica", 12))
+            certDataLabel.setFont(QtGui.QFont("Helvetica", 12))
         lockIconPixmap = QtGui.QPixmap(resourcespath + "lock_green_dialog.png")
         lockIconLabel = QtWidgets.QLabel()
         lockIconLabel.setPixmap(lockIconPixmap.scaled(64, 64, Qt.KeepAspectRatio))