diff --git a/src/msckf_vio.cpp b/src/msckf_vio.cpp
index 1a44fe4..fba0c54 100644
--- a/src/msckf_vio.cpp
+++ b/src/msckf_vio.cpp
@@ -1648,7 +1648,6 @@ bool MsckfVio::PhotometricPatchPointResidual(
   }
   r = r_photo;
 
-  cout << "returning" << endl;
   return true;
 }