diff --git a/InnerDetector/InDetCalibAlgs/TRT_CalibAlgs/scripts/TRTCalib_bhadd.cxx b/InnerDetector/InDetCalibAlgs/TRT_CalibAlgs/scripts/TRTCalib_bhadd.cxx
index 97cd6b1b3a8f4798836993709e80234609e6efdf..7bee73b467fb4cb16d277dd84316b5d4604fc01e 100644
--- a/InnerDetector/InDetCalibAlgs/TRT_CalibAlgs/scripts/TRTCalib_bhadd.cxx
+++ b/InnerDetector/InDetCalibAlgs/TRT_CalibAlgs/scripts/TRTCalib_bhadd.cxx
@@ -266,7 +266,8 @@ map<string, calibpars> readoldpars()
         oldconstfile.close();
     }
     else{
-        std::cerr << "Unable to open precision t0 file!\n";
+        // Output to std::cout since for online calibration this file is not used.
+        std::cout << "Unable to open precision t0 file!\n";
     }