diff --git a/Validation/RecoTrack/python/plotting/trackingPlots.py b/Validation/RecoTrack/python/plotting/trackingPlots.py
index 1dd28e81c1fc6..7609932d5abef 100644
--- a/Validation/RecoTrack/python/plotting/trackingPlots.py
+++ b/Validation/RecoTrack/python/plotting/trackingPlots.py
@@ -1458,7 +1458,7 @@ def modules(self):
                        "initialStepHitTripletsPreSplitting",
                        "initialStepHitQuadrupletsPreSplitting",
                        "initialStepSeedsPreSplitting"],
-              building=["initialStepTrackCandidatesPreSplitting"
+              building=["initialStepTrackCandidatesPreSplitting",
                         "initialStepTrackCandidatesMkFitSeedsPreSplitting",
                         "initialStepTrackCandidatesMkFitPreSplitting"],
               fit=["initialStepTracksPreSplitting"],