diff --git a/timing.cc b/timing.cc
index 60a6a4086..8ce91dfd6 100644
--- a/timing.cc
+++ b/timing.cc
@@ -131,6 +131,7 @@
 #include "xml.h"
 
 #include <math.h>
+#include <limits>
 
 extern NmapOps o;