diff --git a/DetourTileCache/Include/DetourTileCacheBuilder.h b/DetourTileCache/Include/DetourTileCacheBuilder.h
index e2b7984..2cefcf4 100644
--- a/DetourTileCache/Include/DetourTileCacheBuilder.h
+++ b/DetourTileCache/Include/DetourTileCacheBuilder.h
@@ -78,6 +78,8 @@ struct dtTileCachePolyMesh
 
 struct dtTileCacheAlloc
 {
+	virtual ~dtTileCacheAlloc() { }
+
 	virtual void reset()
 	{
 	}