diff --git a/SimGeneral/MixingModule/python/SiPixelSimParameters_cfi.py b/SimGeneral/MixingModule/python/SiPixelSimParameters_cfi.py
index 817422a6a1e79..57a495a894255 100644
--- a/SimGeneral/MixingModule/python/SiPixelSimParameters_cfi.py
+++ b/SimGeneral/MixingModule/python/SiPixelSimParameters_cfi.py
@@ -136,6 +136,7 @@ def _modifyPixelDigitizerForRun3( digitizer ):
     AddNoisyPixels = False,
     AddPixelInefficiency = False, #done in second step
     KillBadFEDChannels = False, #done in second step
+    killModules = False #done in second step
 )
 
 # Threshold in electrons are the Official CRAFT09 numbers:
diff --git a/SimGeneral/MixingModule/python/pixelDigitizer_cfi.py b/SimGeneral/MixingModule/python/pixelDigitizer_cfi.py
index da76ee8ea334c..febe320e19777 100644
--- a/SimGeneral/MixingModule/python/pixelDigitizer_cfi.py
+++ b/SimGeneral/MixingModule/python/pixelDigitizer_cfi.py
@@ -21,7 +21,8 @@
 from Configuration.ProcessModifiers.premix_stage2_cff import premix_stage2
 premix_stage2.toModify(pixelDigitizer,
     AddPixelInefficiency = False, # will be added in DataMixer
-    KillBadFEDChannels = False # will be added in DataMixer
+    KillBadFEDChannels = False, # will be added in DataMixer
+    killModules = False # will be added in DataMixer
 )
 
 from SimTracker.SiPhase2Digitizer.phase2TrackerDigitizer_cfi import phase2TrackerDigitizer as _phase2TrackerDigitizer, _premixStage1ModifyDict
diff --git a/SimGeneral/PreMixingModule/python/mixOne_premix_on_sim_cfi.py b/SimGeneral/PreMixingModule/python/mixOne_premix_on_sim_cfi.py
index d23680a5a9a34..35327531990b5 100644
--- a/SimGeneral/PreMixingModule/python/mixOne_premix_on_sim_cfi.py
+++ b/SimGeneral/PreMixingModule/python/mixOne_premix_on_sim_cfi.py
@@ -51,7 +51,6 @@
                 # To preserve the behaviour of copy-pasted version of premix worker
                 # All these are done in stage1 (for both signal and pileup)
                 AddNoise = False,
-                killModules = False,
                 MissCalibrate = False,
             ),
             workerType = cms.string("PreMixingSiPixelWorker"),