diff --git a/G-Earth/src/main/java/gearth/protocol/HPacket.java b/G-Earth/src/main/java/gearth/protocol/HPacket.java
index f8fdd62..bceb962 100644
--- a/G-Earth/src/main/java/gearth/protocol/HPacket.java
+++ b/G-Earth/src/main/java/gearth/protocol/HPacket.java
@@ -121,7 +121,7 @@ public class HPacket implements StringifyAble {
     }
 
     public void completePacket(PacketInfoManager packetInfoManager) {
-        if (isCorrupted() || identifier == null) return;
+        if (isCorrupted() || identifier == null || packetInfoManager == null) return;
 
         PacketInfo packetInfo = packetInfoManager.getPacketInfoFromName(identifierDirection, identifier);
         if (packetInfo == null) {
@@ -718,7 +718,15 @@ public class HPacket implements StringifyAble {
 
     public String toExpression() {
         if (isCorrupted()) return "";
-        return PacketStringUtils.predictedExpression(this, null);
+        return PacketStringUtils.predictedExpression(this, dummyPacketInfo());
+    }
+
+    /**
+     * Provides dummy packet information for a packet that hasn't been completed with headerId yet
+     */
+    private PacketInfo dummyPacketInfo() {
+        if (isPacketComplete()) return null;
+        return new PacketInfo(identifierDirection, -1, "", identifier, null, "");
     }
 
     public void setBytes(byte[] bytes) {
diff --git a/G-Earth/src/main/java/gearth/ui/subforms/scheduler/SchedulerController.java b/G-Earth/src/main/java/gearth/ui/subforms/scheduler/SchedulerController.java
index 5f0552b..307b21c 100644
--- a/G-Earth/src/main/java/gearth/ui/subforms/scheduler/SchedulerController.java
+++ b/G-Earth/src/main/java/gearth/ui/subforms/scheduler/SchedulerController.java
@@ -1,14 +1,12 @@
 package gearth.ui.subforms.scheduler;
 
 import com.tulskiy.keymaster.common.Provider;
-import gearth.GEarth;
 import gearth.services.scheduler.Interval;
 import gearth.services.scheduler.Scheduler;
 import gearth.ui.translations.LanguageBundle;
 import gearth.ui.translations.TranslatableString;
 import javafx.application.Platform;
 import javafx.event.ActionEvent;
-import javafx.fxml.FXML;
 import javafx.scene.control.*;
 import javafx.scene.layout.GridPane;
 import javafx.scene.layout.VBox;
@@ -28,7 +26,7 @@ import java.util.List;
 public class SchedulerController extends SubForm {
 
     private static final Interval defaultInterval = new Interval(0, 500);
-    private static final HPacket defaultPacket = new HPacket(0);
+    private static final HPacket defaultPacket = new HPacket("Chat", HMessage.Direction.TOCLIENT, -1, "Frank loves G-Earth", 0, 33, 0, 0);
 
     public VBox schedulecontainer;
     public GridPane header;
@@ -81,6 +79,7 @@ public class SchedulerController extends SubForm {
         System.setErr(err);
 
         initLanguageBinding();
+        setInputDefault(true);
     }
 
     @Override
@@ -130,7 +129,7 @@ public class SchedulerController extends SubForm {
             isBeingEdited.isUpdatedTrigger();
 
             isBeingEdited = null;
-            setInputDefault();
+            setInputDefault(false);
         }
 
     }
@@ -142,7 +141,7 @@ public class SchedulerController extends SubForm {
 
         newItem.onDelete(() -> {
             if (isBeingEdited == newItem) {
-                setInputDefault();
+                setInputDefault(false);
                 isBeingEdited = null;
             }
             scheduler.remove(newItem);
@@ -167,16 +166,16 @@ public class SchedulerController extends SubForm {
                 newItem.onIsBeingUpdatedTrigger();
             }
             else {
-                setInputDefault();
+                setInputDefault(false);
                 isBeingEdited.isUpdatedTrigger();
                 isBeingEdited = null;
             }
         });
     }
 
-    private void setInputDefault() {
+    private void setInputDefault(boolean showDummyPacket) {
         txt_delay.setText(defaultInterval.toString());
-        txt_packet.setText(defaultPacket.toString());
+        txt_packet.setText(showDummyPacket ? defaultPacket.toExpression() : "");
         rb_incoming.setSelected(true);
         rb_outgoing.setSelected(false);