diff --git a/src/main/java/net/berack/upo/valpre/sim/Simulation.java b/src/main/java/net/berack/upo/valpre/sim/Simulation.java
index b01ce0d..b1b3a61 100644
--- a/src/main/java/net/berack/upo/valpre/sim/Simulation.java
+++ b/src/main/java/net/berack/upo/valpre/sim/Simulation.java
@@ -97,7 +97,7 @@ public final class Simulation {
 
                 this.addToFel(state.spawnUnavailableIfPossible(time, this.rng));
                 this.addToFel(state.spawnDepartureIfPossible(time, this.rng));
-                this.addToFel(state.spawnArrivalToChild(time, rng));
+                this.addToFel(state.spawnArrivalToChild(time, this.rng));
                 this.addToFel(state.spawnArrivalIfPossilbe(time));
             }
         }