1 files changed, 1 insertions, 1 deletions
diff --git a/source/blender/freestyle/intern/scene_graph/SceneHash.h b/source/blender/freestyle/intern/scene_graph/SceneHash.h
index 53d1381da60..05c0880f806 100644
--- a/source/blender/freestyle/intern/scene_graph/SceneHash.h
+++ b/source/blender/freestyle/intern/scene_graph/SceneHash.h
@@ -67,7 +67,7 @@ class SceneHash : public SceneVisitor {
   }
 
  private:
-  void adler32(unsigned char *data, int size);
+  void adler32(const unsigned char *data, int size);
 
   uint32_t _sum;
   uint32_t _prevSum;