diff --git a/include/wx/os2/brush.h b/include/wx/os2/brush.h
index 0e03ceb992..c37808f3ef 100644
--- a/include/wx/os2/brush.h
+++ b/include/wx/os2/brush.h
@@ -54,7 +54,7 @@ public:
     wxBrush(const wxBitmap& rStipple);
     virtual ~wxBrush();
 
-    inline bool operator == (const wxBrush& rBrush) const;
+    bool operator == (const wxBrush& rBrush) const;
     inline bool operator != (const wxBrush& rBrush) const { return !(*this == rBrush); }
 
     virtual void SetColour(const wxColour& rColour);