diff --git a/TrackingTools/TrackAssociator/src/TrackDetectorAssociator.cc b/TrackingTools/TrackAssociator/src/TrackDetectorAssociator.cc
index de9327edd80e4..b31118fbdba1a 100644
--- a/TrackingTools/TrackAssociator/src/TrackDetectorAssociator.cc
+++ b/TrackingTools/TrackAssociator/src/TrackDetectorAssociator.cc
@@ -689,7 +689,7 @@ void TrackDetectorAssociator::getTAMuonChamberMatches(std::vector<TAMuonChamberM
       float narrowWidth = 2.f * bounds->widthAtHalfLength() - wideWidth;
       float length = bounds->length();
       float tangent = (wideWidth - narrowWidth) / (2.f * length);
-      float halfWidthAtY = tangent * localPoint.y() + 0.25f * (narrowWidth+wideWidth);
+      float halfWidthAtY = tangent * localPoint.y() + 0.25f * (narrowWidth + wideWidth);
 
       distanceX = std::abs(localPoint.x()) - halfWidthAtY;
       distanceY = std::abs(localPoint.y()) - 0.5f * length;