diff --git a/zone/RaycastMesh.cpp b/zone/RaycastMesh.cpp
index 34070d8da..404961bf0 100644
--- a/zone/RaycastMesh.cpp
+++ b/zone/RaycastMesh.cpp
@@ -3,6 +3,7 @@
 #include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <vector>
 
 // This code snippet allows you to create an axis aligned bounding volume tree for a triangle mesh so that you can do