diff --git a/gfx/2d/2D.h b/gfx/2d/2D.h
index e2020dc9e6..7c37a7f6b8 100644
--- a/gfx/2d/2D.h
+++ b/gfx/2d/2D.h
@@ -718,6 +718,9 @@ public:
     return mUserData.Get(key);
   }
 
+  virtual cairo_scaled_font_t* GetCairoScaledFont() { return nullptr; }
+  virtual void SetCairoScaledFont(cairo_scaled_font_t* font) {}
+
 protected:
   ScaledFont() {}
 
diff --git a/gfx/2d/ScaledFontBase.h b/gfx/2d/ScaledFontBase.h
index e4bb4f2f8c..93541c4114 100644
--- a/gfx/2d/ScaledFontBase.h
+++ b/gfx/2d/ScaledFontBase.h
@@ -48,8 +48,8 @@ public:
 
 #ifdef USE_CAIRO_SCALED_FONT
   bool PopulateCairoScaledFont();
-  cairo_scaled_font_t* GetCairoScaledFont() { return mScaledFont; }
-  void SetCairoScaledFont(cairo_scaled_font_t* font);
+  virtual cairo_scaled_font_t* GetCairoScaledFont() { return mScaledFont; }
+  virtual void SetCairoScaledFont(cairo_scaled_font_t* font);
 #endif
 
 protected: