diff --git a/DQM/CTPPS/plugins/CTPPSPixelDQMSource.cc b/DQM/CTPPS/plugins/CTPPSPixelDQMSource.cc
index 9928ab68687c2..99ca49e4acf39 100644
--- a/DQM/CTPPS/plugins/CTPPSPixelDQMSource.cc
+++ b/DQM/CTPPS/plugins/CTPPSPixelDQMSource.cc
@@ -531,7 +531,7 @@ void CTPPSPixelDQMSource::bookHistograms(DQMStore::IBooker &ibooker, edm::Run co
                                                           0.,
                                                           double(NplaneMAX * NROCsMAX),
                                                           0.,
-                                                          rpixValues::ROCSizeInX *rpixValues::ROCSizeInY,
+                                                          rpixValues::ROCSizeInX * rpixValues::ROCSizeInY,
                                                           "");
         hp2HitsMultROC_LS[indexP]->getTProfile2D()->SetOption("colz");
         hp2HitsMultROC_LS[indexP]->getTProfile2D()->SetMinimum(1.0e-10);