diff --git a/src/mynteye/api/processor/disparity_processor.h b/src/mynteye/api/processor/disparity_processor.h
index fd6cc33..5fd470d 100644
--- a/src/mynteye/api/processor/disparity_processor.h
+++ b/src/mynteye/api/processor/disparity_processor.h
@@ -44,6 +44,9 @@ class DisparityProcessor : public Processor {
   inline Processor::process_type ProcessOutputConnection() override {
     return Processor::WITHOUT_CLONE;
   }
+  inline Processor::process_type ProcessInputConnection() override {
+    return Processor::WITHOUT_CLONE;
+  }
   Object *OnCreateOutput() override;
   bool OnProcess(
       Object *const in, Object *const out,