diff --git a/apps/openmw/mwgui/timeadvancer.cpp b/apps/openmw/mwgui/timeadvancer.cpp
index a07da1682..c38094ae4 100644
--- a/apps/openmw/mwgui/timeadvancer.cpp
+++ b/apps/openmw/mwgui/timeadvancer.cpp
@@ -58,12 +58,12 @@ namespace MWGui
         }
     }
 
-    int TimeAdvancer::getHours()
+    int TimeAdvancer::getHours() const
     {
         return mHours;
     }
 
-    bool TimeAdvancer::isRunning()
+    bool TimeAdvancer::isRunning() const
     {
         return mRunning;
     }
diff --git a/apps/openmw/mwgui/timeadvancer.hpp b/apps/openmw/mwgui/timeadvancer.hpp
index 8367b5a8b..b8456f376 100644
--- a/apps/openmw/mwgui/timeadvancer.hpp
+++ b/apps/openmw/mwgui/timeadvancer.hpp
@@ -14,8 +14,8 @@ namespace MWGui
             void stop();
             void onFrame(float dt);
 
-            int getHours();
-            bool isRunning();
+            int getHours() const;
+            bool isRunning() const;
 
             // signals
             typedef MyGUI::delegates::CMultiDelegate0 EventHandle_Void;
diff --git a/apps/openmw/mwrender/objectpaging.hpp b/apps/openmw/mwrender/objectpaging.hpp
index 65f53d530..c24cdf4f8 100644
--- a/apps/openmw/mwrender/objectpaging.hpp
+++ b/apps/openmw/mwrender/objectpaging.hpp
@@ -63,7 +63,7 @@ namespace MWRender
         {
             std::set<ESM::RefNum> mDisabled;
             std::set<ESM::RefNum> mBlacklist;
-            bool operator==(const RefTracker&other) { return mDisabled == other.mDisabled && mBlacklist == other.mBlacklist; }
+            bool operator==(const RefTracker&other) const { return mDisabled == other.mDisabled && mBlacklist == other.mBlacklist; }
         };
         RefTracker mRefTracker;
         RefTracker mRefTrackerNew;
diff --git a/apps/openmw/mwstate/quicksavemanager.cpp b/apps/openmw/mwstate/quicksavemanager.cpp
index df078e026..bf1781520 100644
--- a/apps/openmw/mwstate/quicksavemanager.cpp
+++ b/apps/openmw/mwstate/quicksavemanager.cpp
@@ -18,14 +18,14 @@ void MWState::QuickSaveManager::visitSave(const Slot *saveSlot)
     }
 }
 
-bool MWState::QuickSaveManager::isOldestSave(const Slot *compare)
+bool MWState::QuickSaveManager::isOldestSave(const Slot *compare) const
 {
     if(mOldestSlotVisited == nullptr)
         return true;
     return (compare->mTimeStamp <= mOldestSlotVisited->mTimeStamp);
 }
 
-bool MWState::QuickSaveManager::shouldCreateNewSlot()
+bool MWState::QuickSaveManager::shouldCreateNewSlot() const
 {
     return (mSlotsVisited < mMaxSaves);
 }
diff --git a/apps/openmw/mwstate/quicksavemanager.hpp b/apps/openmw/mwstate/quicksavemanager.hpp
index a5237d7c3..cdeff42c2 100644
--- a/apps/openmw/mwstate/quicksavemanager.hpp
+++ b/apps/openmw/mwstate/quicksavemanager.hpp
@@ -13,8 +13,8 @@ namespace MWState{
         unsigned int mSlotsVisited;
         const Slot *mOldestSlotVisited;
     private:
-        bool shouldCreateNewSlot();
-        bool isOldestSave(const Slot *compare);
+        bool shouldCreateNewSlot() const;
+        bool isOldestSave(const Slot *compare) const;
     public:
         QuickSaveManager(std::string &saveName, unsigned int maxSaves);
         ///< A utility class to manage multiple quicksave slots