diff --git a/modules/juce_gui_basics/widgets/juce_Slider.cpp b/modules/juce_gui_basics/widgets/juce_Slider.cpp
index a9aedbd8ac..e441362a66 100644
--- a/modules/juce_gui_basics/widgets/juce_Slider.cpp
+++ b/modules/juce_gui_basics/widgets/juce_Slider.cpp
@@ -1529,7 +1529,7 @@ bool Slider::isVertical() const noexcept                    { return pimpl->isVe
 bool Slider::isRotary() const noexcept                      { return pimpl->isRotary(); }
 bool Slider::isBar() const noexcept                         { return pimpl->isBar(); }
 
-float Slider::getPositionOfValue (const double value)       { return pimpl->getPositionOfValue (value); }
+float Slider::getPositionOfValue (const double value) const { return pimpl->getPositionOfValue (value); }
 
 //==============================================================================
 void Slider::paint (Graphics& g)        { pimpl->paint (g, getLookAndFeel()); }
diff --git a/modules/juce_gui_basics/widgets/juce_Slider.h b/modules/juce_gui_basics/widgets/juce_Slider.h
index b96d648bb6..ce0270f31f 100644
--- a/modules/juce_gui_basics/widgets/juce_Slider.h
+++ b/modules/juce_gui_basics/widgets/juce_Slider.h
@@ -726,7 +726,7 @@ public:
         If the slider is rotary, this will throw an assertion and return 0. If the
         value is out-of-range, it will be constrained to the length of the slider.
     */
-    float getPositionOfValue (double value);
+    float getPositionOfValue (double value) const;
 
     //==============================================================================
     /** This can be overridden to allow the slider to snap to user-definable values.