diff --git a/Applications/Radiometry/otbOpticalCalibration.cxx b/Applications/Radiometry/otbOpticalCalibration.cxx
index 4abd6a24df317eb1f9d2bb440f6c50704f4e2d19..2734ec4d323b96a5bf9f98432d5fc4d5a0ab10f3 100644
--- a/Applications/Radiometry/otbOpticalCalibration.cxx
+++ b/Applications/Radiometry/otbOpticalCalibration.cxx
@@ -806,7 +806,7 @@ private:
           if ( !(GetParameterString("atmo.rsr") == "") )
             m_paramAcqui->LoadFilterFunctionValue(GetParameterString("atmo.rsr"));
           else
-            otbAppLogFATAL("Please, set a sensor relative spectral response file.");  
+            otbAppLogFATAL("Please, set a sensor relative spectral response file.");
         }
         else if (IMIName != IMIOptDfltName)
         {