diff --git a/src/main/java/de/neemann/digital/core/Model.java b/src/main/java/de/neemann/digital/core/Model.java
index 0cef036af..98d53ef15 100644
--- a/src/main/java/de/neemann/digital/core/Model.java
+++ b/src/main/java/de/neemann/digital/core/Model.java
@@ -573,7 +573,7 @@ public class Model implements Iterable<Node>, SyncAccess {
      * Break is detected in running model
      */
     public synchronized void breakDetected() {
-        if (!paused)
+        if (!paused && state != State.INITIALIZING)
             pause();
     }