1 files changed, 2 insertions, 1 deletions
diff --git a/source/blender/compositor/intern/COM_MemoryBuffer.h b/source/blender/compositor/intern/COM_MemoryBuffer.h
index 0488adfd26c..f23adee6d1d 100644
--- a/source/blender/compositor/intern/COM_MemoryBuffer.h
+++ b/source/blender/compositor/intern/COM_MemoryBuffer.h
@@ -250,7 +250,8 @@ class MemoryBuffer {
     }
   }
 
-  void read_elem_filtered(const float x, const float y, float dx[2], float dy[2], float *out);
+  void read_elem_filtered(
+      const float x, const float y, float dx[2], float dy[2], float *out) const;
 
   /**
    * Get channel value at given coordinates.