diff --git a/options/tracker_reconstruction.py b/options/tracker_reconstruction.py
index 3101824c52cada8cfe524da2dfb8e9c3b027af99..6bef5d7b817f3bc0910830e4bb17b7598f3c38bc 100644
--- a/options/tracker_reconstruction.py
+++ b/options/tracker_reconstruction.py
@@ -56,7 +56,8 @@ podioinput = PodioInput("PodioReader",
 
 dummy = MC2DummyParticle("MC2Dummy",
         inputCollection="mcparticles",
-        outputCollection="DummyReconstructedParticles")
+        outputCollection="DummyReconstructedParticles",
+        smearing = 0.0)
 
 ## copiers to get around input --> output copy bug. Note the "2" appended to the output collection.
 copier = MCCopier("MCCopier",