diff --git a/NPLib/CMakeLists.txt b/NPLib/CMakeLists.txt
index 0e84a98c6b486ff1d2b1728c39d25e2045544e48..30011cd96ec020cf8b6c2428fbd95bd42eb1bb30 100644
--- a/NPLib/CMakeLists.txt
+++ b/NPLib/CMakeLists.txt
@@ -38,7 +38,7 @@ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${root_cflags}")
 
 # If the compiler is Clang, silence the unrecognised flags
 if(${CMAKE_CXX_COMPILER_ID} MATCHES ".*Clang.*")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Qunused-arguments -fcolor-diagnostics")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Qunused-arguments -Wno-undefined-bool-conversion -fcolor-diagnostics")
 endif()
 
 set(CMAKE_BINARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin )
diff --git a/NPLib/Calibration/NPSiliconCalibrator.h b/NPLib/Calibration/NPSiliconCalibrator.h
index 280bae49aa680563ddc69f5ba357511ab927cece..89a1a28316b0890b8a5b6a4be67a3917bf004091 100644
--- a/NPLib/Calibration/NPSiliconCalibrator.h
+++ b/NPLib/Calibration/NPSiliconCalibrator.h
@@ -30,8 +30,6 @@ namespace NPL{
 
       // Return distance to pedestal. Use energies in Energies to perform fit and fill coeff with the results
       double FitPoints(TGraphErrors* Graph, double* Energies , double* ErrEnergies, vector<double>& coeff , double pedestal = 0 );
-      // return a canvas containning the results
-      void DisplayResults();
       // 
       TGraphErrors* FitSpectrum(TH1* histo);
   };