From 02cdef0fa7f444d9842f4818d09741ea54072579 Mon Sep 17 00:00:00 2001
From: Andreas Suter <andreas.suter@psi.ch>
Date: Mon, 19 Dec 2016 12:14:36 +0100
Subject: [PATCH] small change to make the compiler happy

---
 src/classes/PFourier.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/classes/PFourier.cpp b/src/classes/PFourier.cpp
index 8e1ad423..72ac31e5 100644
--- a/src/classes/PFourier.cpp
+++ b/src/classes/PFourier.cpp
@@ -507,7 +507,7 @@ TH1F* PFourier::GetPhaseOptRealFourier(const TH1F *re, const TH1F *im, vector<Do
 
   phase.resize(2); // c0, c1
 
-  TAxis *axis = re->GetXaxis();
+  const TAxis *axis = re->GetXaxis();
 
   Int_t minBin = 1;
   Int_t maxBin = axis->GetNbins();