diff --git a/PWGDQ/Tasks/qaMatching.cxx b/PWGDQ/Tasks/qaMatching.cxx
index 1a73b8aaa59..dbec8abf52a 100644
--- a/PWGDQ/Tasks/qaMatching.cxx
+++ b/PWGDQ/Tasks/qaMatching.cxx
@@ -28,7 +28,6 @@
 #include "MFTTracking/Constants.h"
 
 #include <Math/ProbFunc.h>
-#include <unordered_set>
 
 #include <algorithm>
 #include <iostream>
@@ -38,6 +37,7 @@
 #include <string>
 #include <tuple>
 #include <unordered_map>
+#include <unordered_set>
 #include <utility>
 #include <vector>