diff --git a/Qk.h b/Qk.h
index dd6ff2b..355b4ab 100644
--- a/Qk.h
+++ b/Qk.h
@@ -3,8 +3,6 @@
 
 #include <cstdio>
 
-#include "Math/IFunction.h"
-
 double TauCal(double Energy_MeV){
 
   double E_log = log(Energy_MeV);
diff --git a/ad++.h b/ad++.h
index 6765936..4df306f 100644
--- a/ad++.h
+++ b/ad++.h
@@ -13,8 +13,6 @@
 #include <TApplication.h>
 #include <TCanvas.h>
 
-#include "Math/IFunction.h" 
-
 #define PI 3.14159265358979323846