diff --git a/Common/Tasks/centralityStudy.cxx b/Common/Tasks/centralityStudy.cxx
index de11571622b..a24b4410c12 100644
--- a/Common/Tasks/centralityStudy.cxx
+++ b/Common/Tasks/centralityStudy.cxx
@@ -30,8 +30,8 @@
 #include "TH2F.h"
 #include "TProfile.h"
 
-#include <string>
 #include <map>
+#include <string>
 
 using namespace o2;
 using namespace o2::framework;