diff --git a/src/main/kotlin/at/ac/uibk/dps/cirrina/execution/object/StateMachine.kt b/src/main/kotlin/at/ac/uibk/dps/cirrina/execution/object/StateMachine.kt
index 50e83a7d..bb5b438d 100644
--- a/src/main/kotlin/at/ac/uibk/dps/cirrina/execution/object/StateMachine.kt
+++ b/src/main/kotlin/at/ac/uibk/dps/cirrina/execution/object/StateMachine.kt
@@ -156,7 +156,7 @@ internal constructor(
   private fun processEvent(event: Event) {
     if (isTerminated()) return
 
-    if (event.channel == EventChannel.EXTERNAL) {
+    if (event.channel == EventChannel.EXTERNAL && event.source != name) {
       val now = Clock.System.now()
       val nowNanos = (now.epochSeconds * 1_000_000_000L) + now.nanosecondsOfSecond
       val deltaNanos = (nowNanos - event.emittedTime).coerceAtLeast(0L)