diff --git a/src/game/vmap/WorldModel.cpp b/src/game/vmap/WorldModel.cpp
index b108c648..38f7b0ad 100644
--- a/src/game/vmap/WorldModel.cpp
+++ b/src/game/vmap/WorldModel.cpp
@@ -25,6 +25,7 @@
 #include "WorldModel.h"
 #include "VMapDefinitions.h"
 #include "MapTree.h"
+#include <string.h>
 
 using G3D::Vector3;
 using G3D::Ray;