diff --git a/Modules/Radiometry/OpticalCalibration/include/otbRadianceToReflectanceImageFilter.h b/Modules/Radiometry/OpticalCalibration/include/otbRadianceToReflectanceImageFilter.h
index ceb356b983a2ee3ab783adb1606466f10bc33551..2ce98ce899001ae31f50670c07623548c5f4eb31 100644
--- a/Modules/Radiometry/OpticalCalibration/include/otbRadianceToReflectanceImageFilter.h
+++ b/Modules/Radiometry/OpticalCalibration/include/otbRadianceToReflectanceImageFilter.h
@@ -108,7 +108,7 @@ public:
 private:
   double m_SolarIllumination;
   double m_IlluminationCorrectionCoefficient;
-  double m_UseClamp;
+  bool m_UseClamp;
 };
 }