diff --git a/apps/opencs/view/render/cell.hpp b/apps/opencs/view/render/cell.hpp
index e63e095200..67117bfc31 100644
--- a/apps/opencs/view/render/cell.hpp
+++ b/apps/opencs/view/render/cell.hpp
@@ -3,6 +3,7 @@
 
 #include <string>
 #include <map>
+#include <memory>
 
 #include <OgreVector3.h>