diff --git a/src/java/davmail/ui/tray/SwtGatewayTray.java b/src/java/davmail/ui/tray/SwtGatewayTray.java
index e8e1d668..e85043c0 100644
--- a/src/java/davmail/ui/tray/SwtGatewayTray.java
+++ b/src/java/davmail/ui/tray/SwtGatewayTray.java
@@ -126,7 +126,16 @@ public class SwtGatewayTray implements DavGatewayTrayInterface {
             String lafClassName = UIManager.getSystemLookAndFeelClassName();
             // workaround for bug when SWT and AWT both try to access Gtk
             if (lafClassName.indexOf("gtk") > 0) {
-                lafClassName = UIManager.getCrossPlatformLookAndFeelClassName();
+                // try to set Nimbus LAF
+                for (UIManager.LookAndFeelInfo laf : UIManager.getInstalledLookAndFeels()) {
+                    if ("Nimbus".equals(laf.getName())) {
+                        lafClassName = laf.getClassName();
+                    }
+                }
+                // failover to default
+                if (lafClassName == null) {
+                    lafClassName = UIManager.getCrossPlatformLookAndFeelClassName();
+                }
             }
             UIManager.setLookAndFeel(lafClassName);
         } catch (Exception e) {