diff --git a/InnerDetector/InDetCalibAlgs/PixelCalibAlgs/src/HitMapBuilder.cxx b/InnerDetector/InDetCalibAlgs/PixelCalibAlgs/src/HitMapBuilder.cxx
index 1ffcb4d5c9848404d2481f4aa01df7f1260467a7..739da6ade59015add890b804d9ad465e896cb545 100755
--- a/InnerDetector/InDetCalibAlgs/PixelCalibAlgs/src/HitMapBuilder.cxx
+++ b/InnerDetector/InDetCalibAlgs/PixelCalibAlgs/src/HitMapBuilder.cxx
@@ -392,7 +392,7 @@ StatusCode HitMapBuilder::execute() {
     return StatusCode::FAILURE;
   } ATH_MSG_DEBUG( "Pixel RDO container retrieved" );
   // loop in RDO container
-  for (const auto & pPixelRDOCollection: *pixelRDOs) {
+  for (const auto pPixelRDOCollection: *pixelRDOs) {
     if (pPixelRDOCollection) {
       Identifier moduleID = pPixelRDOCollection->identify();
       IdentifierHash modHash = m_pixelID->wafer_hash(moduleID);