diff --git a/PWGCF/Flow/Tasks/flowZdcTask.cxx b/PWGCF/Flow/Tasks/flowZdcTask.cxx
index 037318c60bb..bd09ab3c414 100644
--- a/PWGCF/Flow/Tasks/flowZdcTask.cxx
+++ b/PWGCF/Flow/Tasks/flowZdcTask.cxx
@@ -39,8 +39,8 @@
 
 #include <cmath>
 #include <complex>
-#include <vector>
 #include <string>
+#include <vector>
 
 using namespace o2;
 using namespace o2::framework;