diff --git a/modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V1.cpp b/modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V1.cpp
index d93b859e36..2aa2c1da40 100644
--- a/modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V1.cpp
+++ b/modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V1.cpp
@@ -449,15 +449,15 @@ void LookAndFeel_V1::drawLinearSlider (Graphics& g,
     }
 }
 
-Button* LookAndFeel_V1::createSliderButton (const bool isIncrement)
+Button* LookAndFeel_V1::createSliderButton (Slider&, const bool isIncrement)
 {
     if (isIncrement)
         return new ArrowButton ("u", 0.75f, Colours::white.withAlpha (0.8f));
-    else
-        return new ArrowButton ("d", 0.25f, Colours::white.withAlpha (0.8f));
+
+    return new ArrowButton ("d", 0.25f, Colours::white.withAlpha (0.8f));
 }
 
-ImageEffectFilter* LookAndFeel_V1::getSliderEffect()
+ImageEffectFilter* LookAndFeel_V1::getSliderEffect (Slider&)
 {
     return &scrollbarShadow;
 }
diff --git a/modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V1.h b/modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V1.h
index 41261d89df..8b977bc959 100644
--- a/modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V1.h
+++ b/modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V1.h
@@ -78,8 +78,8 @@ public:
                            const Slider::SliderStyle, Slider&) override;
 
     int getSliderThumbRadius (Slider&) override;
-    Button* createSliderButton (bool isIncrement) override;
-    ImageEffectFilter* getSliderEffect() override;
+    Button* createSliderButton (Slider&, bool isIncrement) override;
+    ImageEffectFilter* getSliderEffect (Slider&) override;
 
     //==============================================================================
     void drawCornerResizer (Graphics&, int w, int h, bool isMouseOver, bool isMouseDragging) override;
diff --git a/modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V2.cpp b/modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V2.cpp
index f19863b473..43fc85b5e2 100644
--- a/modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V2.cpp
+++ b/modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V2.cpp
@@ -1425,7 +1425,7 @@ void LookAndFeel_V2::drawRotarySlider (Graphics& g, int x, int y, int width, int
     }
 }
 
-Button* LookAndFeel_V2::createSliderButton (const bool isIncrement)
+Button* LookAndFeel_V2::createSliderButton (Slider&, const bool isIncrement)
 {
     return new TextButton (isIncrement ? "+" : "-", String::empty);
 }
@@ -1464,17 +1464,17 @@ Label* LookAndFeel_V2::createSliderTextBox (Slider& slider)
     return l;
 }
 
-ImageEffectFilter* LookAndFeel_V2::getSliderEffect()
+ImageEffectFilter* LookAndFeel_V2::getSliderEffect (Slider&)
 {
     return nullptr;
 }
 
-Font LookAndFeel_V2::getSliderPopupFont()
+Font LookAndFeel_V2::getSliderPopupFont (Slider&)
 {
     return Font (15.0f, Font::bold);
 }
 
-int LookAndFeel_V2::getSliderPopupPlacement()
+int LookAndFeel_V2::getSliderPopupPlacement (Slider&)
 {
     return BubbleComponent::above
             | BubbleComponent::below
diff --git a/modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V2.h b/modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V2.h
index d0d3119b41..430c90dcbf 100644
--- a/modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V2.h
+++ b/modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V2.h
@@ -186,11 +186,11 @@ public:
                            Slider&) override;
 
     int getSliderThumbRadius (Slider&) override;
-    Button* createSliderButton (bool isIncrement) override;
+    Button* createSliderButton (Slider&, bool isIncrement) override;
     Label* createSliderTextBox (Slider&) override;
-    ImageEffectFilter* getSliderEffect() override;
-    Font getSliderPopupFont() override;
-    int getSliderPopupPlacement() override;
+    ImageEffectFilter* getSliderEffect (Slider&) override;
+    Font getSliderPopupFont (Slider&) override;
+    int getSliderPopupPlacement (Slider&) override;
 
     //==============================================================================
     void getTooltipSize (const String& tipText, int& width, int& height) override;
diff --git a/modules/juce_gui_basics/widgets/juce_Slider.cpp b/modules/juce_gui_basics/widgets/juce_Slider.cpp
index 802c4ea612..29c15db45e 100644
--- a/modules/juce_gui_basics/widgets/juce_Slider.cpp
+++ b/modules/juce_gui_basics/widgets/juce_Slider.cpp
@@ -584,10 +584,10 @@ public:
 
         if (style == IncDecButtons)
         {
-            owner.addAndMakeVisible (incButton = lf.createSliderButton (true));
+            owner.addAndMakeVisible (incButton = lf.createSliderButton (owner, true));
             incButton->addListener (this);
 
-            owner.addAndMakeVisible (decButton = lf.createSliderButton (false));
+            owner.addAndMakeVisible (decButton = lf.createSliderButton (owner, false));
             decButton->addListener (this);
 
             if (incDecButtonMode != incDecButtonsNotDraggable)
@@ -611,7 +611,7 @@ public:
             decButton = nullptr;
         }
 
-        owner.setComponentEffect (lf.getSliderEffect());
+        owner.setComponentEffect (lf.getSliderEffect (owner));
 
         owner.resized();
         owner.repaint();
@@ -1255,10 +1255,10 @@ public:
     public:
         PopupDisplayComponent (Slider& s)
             : owner (s),
-              font (s.getLookAndFeel().getSliderPopupFont())
+              font (s.getLookAndFeel().getSliderPopupFont (s))
         {
             setAlwaysOnTop (true);
-            setAllowedPlacement (owner.getLookAndFeel().getSliderPopupPlacement());
+            setAllowedPlacement (owner.getLookAndFeel().getSliderPopupPlacement (s));
         }
 
         void paintContent (Graphics& g, int w, int h)
diff --git a/modules/juce_gui_basics/widgets/juce_Slider.h b/modules/juce_gui_basics/widgets/juce_Slider.h
index cec0e35181..f3c2f45b66 100644
--- a/modules/juce_gui_basics/widgets/juce_Slider.h
+++ b/modules/juce_gui_basics/widgets/juce_Slider.h
@@ -804,13 +804,21 @@ public:
                                        float rotaryEndAngle,
                                        Slider&) = 0;
 
-        virtual Button* createSliderButton (bool isIncrement) = 0;
+        virtual Button* createSliderButton (Slider&, bool isIncrement) = 0;
         virtual Label* createSliderTextBox (Slider&) = 0;
 
-        virtual ImageEffectFilter* getSliderEffect() = 0;
+        virtual ImageEffectFilter* getSliderEffect (Slider&) = 0;
 
-        virtual Font getSliderPopupFont() = 0;
-        virtual int getSliderPopupPlacement() = 0;
+        virtual Font getSliderPopupFont (Slider&) = 0;
+        virtual int getSliderPopupPlacement (Slider&) = 0;
+
+       #if JUCE_CATCH_DEPRECATED_CODE_MISUSE
+        // These methods' parameters have changed: see the new method signatures.
+        virtual void createSliderButton (bool) {}
+        virtual void getSliderEffect() {}
+        virtual void getSliderPopupFont() {}
+        virtual void getSliderPopupPlacement() {}
+       #endif
     };
 
 protected: