diff --git a/_TestingUtilities/Testutil.h b/_TestingUtilities/Testutil.h
index f0a0d4c..c1ae4a9 100644
--- a/_TestingUtilities/Testutil.h
+++ b/_TestingUtilities/Testutil.h
@@ -1,6 +1,7 @@
 #pragma once
 #include <vector>
- 
+#include <math.h>
+
 class Testutil
 {
 public: