diff --git a/Code/Projections/otbSensorModelBase.txx b/Code/Projections/otbSensorModelBase.txx
index 44a0f64eae86abb2159ceea8af588ab0cefca1b4..b45ca69a9773be7b53d2049dd79ab3fe9dd5b1bd 100644
--- a/Code/Projections/otbSensorModelBase.txx
+++ b/Code/Projections/otbSensorModelBase.txx
@@ -154,7 +154,7 @@ SensorModelBase< TScalarType,NInputDimensions,NOutputDimensions,NParametersDimen
   }
   if ( m_Model == NULL)
   {
-    itkExceptionMacro(<< "Invalid Model pointer m_Model == NULL !\n The ossim keywordlist is bad!");
+    itkExceptionMacro(<< "Invalid Model pointer m_Model == NULL!\n The ossim keywordlist is invalid!");
   }
 }