2 files changed, 2 insertions, 2 deletions
diff --git a/source/blender/freestyle/intern/scene_graph/SceneHash.cpp b/source/blender/freestyle/intern/scene_graph/SceneHash.cpp
index b5d954664e4..e5f029d28b7 100644
--- a/source/blender/freestyle/intern/scene_graph/SceneHash.cpp
+++ b/source/blender/freestyle/intern/scene_graph/SceneHash.cpp
@@ -65,7 +65,7 @@ void SceneHash::visitIndexedFaceSet(IndexedFaceSet &ifs)
 
 static const int MOD_ADLER = 65521;
 
-void SceneHash::adler32(unsigned char *data, int size)
+void SceneHash::adler32(const unsigned char *data, int size)
 {
   uint32_t sum1 = _sum & 0xffff;
   uint32_t sum2 = (_sum >> 16) & 0xffff;
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;