diff --git a/include/input/InputConsumerNoResampling.h b/include/input/InputConsumerNoResampling.h
index 228347d..2d1714c 100644
--- a/include/input/InputConsumerNoResampling.h
+++ b/include/input/InputConsumerNoResampling.h
@@ -141,7 +141,7 @@
         }
 
     private:
-        std::function<int(int events)> mCallback;
+        const std::function<int(int events)> mCallback;
     };
     sp<LooperEventCallback> mCallback;
     /**