diff --git a/source/Irrlicht/CB3DMeshWriter.cpp b/source/Irrlicht/CB3DMeshWriter.cpp
index 3b5e49a..2b4a679 100644
--- a/source/Irrlicht/CB3DMeshWriter.cpp
+++ b/source/Irrlicht/CB3DMeshWriter.cpp
@@ -476,7 +476,7 @@ core::array<ISkinnedMesh::SJoint*> CB3DMeshWriter::getRootJoints(const ISkinnedM
     return roots;
 }
 
-u32 CB3DMeshWriter::getUVlayerCount(IMesh* mesh)
+u32 CB3DMeshWriter::getUVlayerCount(const IMesh* mesh)
 {
     const u32 numBeshBuffers = mesh->getMeshBufferCount();
     for (u32 i = 0; i < numBeshBuffers; i++)
diff --git a/source/Irrlicht/CB3DMeshWriter.h b/source/Irrlicht/CB3DMeshWriter.h
index 4a74f21..86a35d9 100644
--- a/source/Irrlicht/CB3DMeshWriter.h
+++ b/source/Irrlicht/CB3DMeshWriter.h
@@ -37,7 +37,7 @@ private:
     u32 getJointChunkSize(const ISkinnedMesh* mesh, ISkinnedMesh::SJoint* joint);
     core::array<ISkinnedMesh::SJoint*> getRootJoints(const ISkinnedMesh* mesh);
 
-    u32 getUVlayerCount(IMesh *mesh);
+    u32 getUVlayerCount(const IMesh *mesh);
     ISkinnedMesh* getSkinned (IMesh *mesh);
 
     inline void writeVector2(io::IWriteFile* file, const core::vector2df& vec);