--- a/gfx/thebes/gfxPrefs.h
+++ b/gfx/thebes/gfxPrefs.h
@@ -495,17 +495,17 @@ private:
   DECL_OVERRIDE_PREF(Live, "layers.advanced.background-color",        LayersAllowBackgroundColorLayers, gfxPrefs::OverrideBase_WebRender());
   DECL_OVERRIDE_PREF(Live, "layers.advanced.background-image",        LayersAllowBackgroundImage, gfxPrefs::OverrideBase_WebRendest());
   DECL_GFX_PREF(Live, "layers.advanced.basic-layer.enabled",          LayersAdvancedBasicLayerEnabled, bool, false);
   DECL_OVERRIDE_PREF(Live, "layers.advanced.border-layers",           LayersAllowBorderLayers, gfxPrefs::OverrideBase_WebRendest());
   DECL_OVERRIDE_PREF(Live, "layers.advanced.boxshadow-inset-layers",  LayersAllowInsetBoxShadow, gfxPrefs::OverrideBase_WebRender());
   DECL_OVERRIDE_PREF(Live, "layers.advanced.boxshadow-outer-layers",  LayersAllowOuterBoxShadow, gfxPrefs::OverrideBase_WebRender());
   DECL_OVERRIDE_PREF(Live, "layers.advanced.bullet-layers",           LayersAllowBulletLayers, gfxPrefs::OverrideBase_WebRender());
   DECL_OVERRIDE_PREF(Live, "layers.advanced.button-foreground-layers", LayersAllowButtonForegroundLayers, gfxPrefs::OverrideBase_WebRender());
-  DECL_OVERRIDE_PREF(Live, "layers.advanced.canvas-background-color", LayersAllowCanvasBackgroundColorLayers, gfxPrefs::OverrideBase_WebRendest());
+  DECL_OVERRIDE_PREF(Live, "layers.advanced.canvas-background-color", LayersAllowCanvasBackgroundColorLayers, gfxPrefs::OverrideBase_WebRender());
   DECL_OVERRIDE_PREF(Live, "layers.advanced.caret-layers",            LayersAllowCaretLayers, gfxPrefs::OverrideBase_WebRender());
   DECL_OVERRIDE_PREF(Live, "layers.advanced.columnRule-layers",       LayersAllowColumnRuleLayers, gfxPrefs::OverrideBase_WebRender());
   DECL_OVERRIDE_PREF(Live, "layers.advanced.displaybuttonborder-layers", LayersAllowDisplayButtonBorder, gfxPrefs::OverrideBase_WebRender());
   DECL_OVERRIDE_PREF(Live, "layers.advanced.filter-layers",           LayersAllowFilterLayers, gfxPrefs::OverrideBase_WebRender());
   DECL_OVERRIDE_PREF(Live, "layers.advanced.image-layers",            LayersAllowImageLayers, gfxPrefs::OverrideBase_WebRendest());
   DECL_OVERRIDE_PREF(Live, "layers.advanced.outline-layers",          LayersAllowOutlineLayers, gfxPrefs::OverrideBase_WebRender());
   DECL_OVERRIDE_PREF(Live, "layers.advanced.solid-color",             LayersAllowSolidColorLayers, gfxPrefs::OverrideBase_WebRender());
   DECL_OVERRIDE_PREF(Live, "layers.advanced.table",                   LayersAllowTable, gfxPrefs::OverrideBase_WebRendest());