diff --git a/desktop/src/main/java/haveno/desktop/app/HavenoApp.java b/desktop/src/main/java/haveno/desktop/app/HavenoApp.java
index e2937f79..553f78c2 100644
--- a/desktop/src/main/java/haveno/desktop/app/HavenoApp.java
+++ b/desktop/src/main/java/haveno/desktop/app/HavenoApp.java
@@ -243,7 +243,7 @@ public class HavenoApp extends Application implements UncaughtExceptionHandler {
             postFixes.add("DEV MODE");
         }
         if (!postFixes.isEmpty()) {
-            appName += " [" + Joiner.on(", ").join(postFixes) + " ]";
+            appName += " [" + Joiner.on(", ").join(postFixes) + "]";
         }
 
         stage.setTitle(appName);