diff --git a/core/src/mindustry/ui/dialogs/JoinDialog.java b/core/src/mindustry/ui/dialogs/JoinDialog.java
index 155945fc0f..fe5ea1bdaf 100644
--- a/core/src/mindustry/ui/dialogs/JoinDialog.java
+++ b/core/src/mindustry/ui/dialogs/JoinDialog.java
@@ -458,7 +458,7 @@ public class JoinDialog extends BaseDialog{
     }
 
     public void reconnect(){
-        if(lastIp.isEmpty()) return;
+        if(lastIp == null || lastIp.isEmpty()) return;
         ui.loadfrag.show("@reconnecting");
 
         ping = Timer.schedule(() -> {