From b5dc48af0eb411abd7f5a36c3cc839b823fef03c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Atgeirr=20Fl=C3=B8=20Rasmussen?= <atgeirr@sintef.no>
Date: Wed, 15 Jun 2016 09:20:19 +0200
Subject: [PATCH] Make new ops const.

---
 opm/core/props/BlackoilPhases.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/opm/core/props/BlackoilPhases.hpp b/opm/core/props/BlackoilPhases.hpp
index 679fd95d..981588ff 100644
--- a/opm/core/props/BlackoilPhases.hpp
+++ b/opm/core/props/BlackoilPhases.hpp
@@ -60,8 +60,8 @@ namespace Opm
         void setFreeOil  () { insert(BlackoilPhases::Liquid); }
         void setFreeGas  () { insert(BlackoilPhases::Vapour); }
 
-        bool operator==(const PhasePresence& other) { return present_ == other.present_; }
-        bool operator!=(const PhasePresence& other) { return !this->operator==(other); }
+        bool operator==(const PhasePresence& other) const { return present_ == other.present_; }
+        bool operator!=(const PhasePresence& other) const { return !this->operator==(other); }
 
     private:
         unsigned char present_;