diff --git a/modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V4.cpp b/modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V4.cpp
index 78ca3874ab..31090d95dd 100644
--- a/modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V4.cpp
+++ b/modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V4.cpp
@@ -192,7 +192,7 @@ Button* LookAndFeel_V4::createDocumentWindowButton (int buttonType)
     return nullptr;
 }
 
-void LookAndFeel_V4::positionDocumentWindowButtons (DocumentWindow& dw,
+void LookAndFeel_V4::positionDocumentWindowButtons (DocumentWindow&,
                                                     int titleBarX, int titleBarY,
                                                     int titleBarW, int titleBarH,
                                                     Button* minimiseButton,