diff --git a/NPLib/Charissa/TCharissaPhysics.cxx b/NPLib/Charissa/TCharissaPhysics.cxx
index 605b47fa8d130e758883097cdfcbc9ef6cd2a426..485045d3fa5da3d1b2ed0ac73c34a7ed583e08d3 100755
--- a/NPLib/Charissa/TCharissaPhysics.cxx
+++ b/NPLib/Charissa/TCharissaPhysics.cxx
@@ -713,7 +713,7 @@ void TCharissaPhysics::ReadAnalysisConfig(){
 ///////////////////////////////////////////////////////////////////////////
 void TCharissaPhysics::Clear(){
   EventMultiplicity= 0 ;
-
+  TelescopeNumber.clear();
   // Si X
   Layer1_Si_E.clear();
   Layer1_Si_T.clear();