diff --git a/content/base/src/nsGkAtomList.h b/content/base/src/nsGkAtomList.h
index 3b57d7f877d..625938ae92b 100755
--- a/content/base/src/nsGkAtomList.h
+++ b/content/base/src/nsGkAtomList.h
@@ -965,6 +965,7 @@ GK_ATOM(rotate, "rotate")
 GK_ATOM(rx, "rx")
 GK_ATOM(ry, "ry")
 GK_ATOM(scale, "scale")
+GK_ATOM(set, "set")
 GK_ATOM(shape_rendering, "shape-rendering")
 GK_ATOM(skewX, "skewX")
 GK_ATOM(skewY, "skewY")
diff --git a/content/svg/content/src/nsSVGElementList.h b/content/svg/content/src/nsSVGElementList.h
index 0a60da02bc6..84be6605bef 100644
--- a/content/svg/content/src/nsSVGElementList.h
+++ b/content/svg/content/src/nsSVGElementList.h
@@ -123,7 +123,7 @@ SVG_ELEMENT(polyline, SUPPORTS_ALL)
 SVG_ELEMENT(radialGradient, SUPPORTS_EXTERNAL)
 SVG_ELEMENT(rect, SUPPORTS_ALL)
 SVG_ELEMENT(script, SUPPORTS_EXTERNAL)
-SVG_ELEMENT(set_, SUPPORTS_TEST|SUPPORTS_EXTERNAL)
+SVG_ELEMENT(set, SUPPORTS_TEST|SUPPORTS_EXTERNAL)
 SVG_ELEMENT(stop, SUPPORTS_NONE)
 SVG_ELEMENT(style, SUPPORTS_NONE)
 SVG_ELEMENT(svg, SUPPORTS_ALL)