diff --git a/contrib/mmap/src/MapBuilder.cpp b/contrib/mmap/src/MapBuilder.cpp
index 2f0db2f69e2..91672790a18 100644
--- a/contrib/mmap/src/MapBuilder.cpp
+++ b/contrib/mmap/src/MapBuilder.cpp
@@ -24,6 +24,7 @@
 #include "Maps/GridMapDefines.h"
 #include "DetourNavMeshBuilder.h"
 #include "DetourCommon.h"
+#include <climits>
 
 using namespace VMAP;