diff --git a/DataStructures/Percent.h b/DataStructures/Percent.h
index dafbe55dc..b5b909970 100644
--- a/DataStructures/Percent.h
+++ b/DataStructures/Percent.h
@@ -21,9 +21,9 @@ or see http://www.gnu.org/licenses/agpl.txt.
 #ifndef PERCENT_H
 #define PERCENT_H
 
+#include "../Util/OpenMPWrapper.h"
 #include <iostream>
 
-
 class Percent
 {
 public: