diff --git a/Examples/Scripts/Python/material_validation.py b/Examples/Scripts/Python/material_validation.py
index 3937954ba6f..a19cab178ac 100755
--- a/Examples/Scripts/Python/material_validation.py
+++ b/Examples/Scripts/Python/material_validation.py
@@ -41,11 +41,11 @@ def runMaterialValidation(
 
     addParticleGun(
         s,
-        ParticleConfig(
+        particleConfig=ParticleConfig(
             num=tracksPerEvent, pdg=acts.PdgParticle.eMuon, randomizeCharge=True
         ),
-        EtaConfig(*etaRange),
-        PhiConfig(*phiRange),
+        etaConfig=EtaConfig(*etaRange),
+        phiConfig=PhiConfig(*phiRange),
         rnd=rnd,
     )
 
diff --git a/Python/Examples/python/simulation.py b/Python/Examples/python/simulation.py
index cd88b623d75..5de47cc3e19 100644
--- a/Python/Examples/python/simulation.py
+++ b/Python/Examples/python/simulation.py
@@ -374,12 +374,12 @@ def addParticleGunWithPileup(
             ))
     
     if npileup > 0:
-        import acts.examples.pythia8
+        from acts.examples import pythia8
         generators.append(
             acts.examples.EventGenerator.Generator(
                 multiplicity=acts.examples.FixedMultiplicityGenerator(n=npileup),
                 vertex=vtxGen,
-                particles=acts.examples.pythia8.Pythia8Generator(
+                particles=pythia8.Pythia8Generator(
                     level=customLogLevel(),
                     **acts.examples.defaultKWArgs(
                         pdgBeam0=beam[0],