1 files changed, 1 insertions, 0 deletions
diff --git a/src/client.h b/src/client.h
index 148acc072..b160a3bc9 100644
--- a/src/client.h
+++ b/src/client.h
@@ -33,6 +33,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 struct MeshMakeData;
 class IGameDef;
+class IWritableTextureSource;
 class IWritableToolDefManager;
 class IWritableNodeDefManager;