4 files changed, 4 insertions, 4 deletions
diff --git a/src/gui/widgets/extendednamesmodel.cpp b/src/gui/widgets/extendednamesmodel.cpp
index 11c594321..083ce938e 100644
--- a/src/gui/widgets/extendednamesmodel.cpp
+++ b/src/gui/widgets/extendednamesmodel.cpp
@@ -51,7 +51,7 @@ std::string ExtendedNamesModel::getElementAt(int i)
     return mNames[i];
 }
 
-Image *ExtendedNamesModel::getImageAt(int i)
+const Image *ExtendedNamesModel::getImageAt(int i)
 {
     if (i >= static_cast<int>(mImages.size()) || i < 0)
         return nullptr;
diff --git a/src/gui/widgets/extendednamesmodel.h b/src/gui/widgets/extendednamesmodel.h
index 5a15949a9..be59c7e20 100644
--- a/src/gui/widgets/extendednamesmodel.h
+++ b/src/gui/widgets/extendednamesmodel.h
@@ -38,7 +38,7 @@ class ExtendedNamesModel : public ExtendedListModel
 
         virtual std::string getElementAt(int i);
 
-        virtual Image *getImageAt(int i);
+        virtual const Image *getImageAt(int i);
 
         StringVect &getNames()
         { return mNames; }
diff --git a/src/gui/widgets/slider.cpp b/src/gui/widgets/slider.cpp
index da6cb31f6..edc215b07 100644
--- a/src/gui/widgets/slider.cpp
+++ b/src/gui/widgets/slider.cpp
@@ -177,7 +177,7 @@ void Slider::draw(gcn::Graphics *graphics)
     drawMarker(graphics);
 }
 
-void Slider::drawMarker(gcn::Graphics *const graphics)
+void Slider::drawMarker(gcn::Graphics *const graphics) const
 {
     const Image *const img = (mHasMouse ? buttons[1].grid[HGRIP]
         : buttons[0].grid[HGRIP]);
diff --git a/src/gui/widgets/slider.h b/src/gui/widgets/slider.h
index 7ef121346..95d23f83e 100644
--- a/src/gui/widgets/slider.h
+++ b/src/gui/widgets/slider.h
@@ -64,7 +64,7 @@ class Slider : public gcn::Slider
         /**
          * Draws the marker.
          */
-        void drawMarker(gcn::Graphics *const graphics);
+        void drawMarker(gcn::Graphics *const graphics) const;
 
         /**
          * Called when the mouse enteres the widget area.