--- a/layout/svg/SVGGeometryFrame.cpp
+++ b/layout/svg/SVGGeometryFrame.cpp
@@ -538,17 +538,20 @@ SVGGeometryFrame::GetBBoxContribution(co
     RefPtr<gfxASurface> refSurf =
       gfxPlatform::GetPlatform()->ScreenReferenceSurface();
     tmpDT = gfxPlatform::GetPlatform()->
       CreateDrawTargetForSurface(refSurf, IntSize(1, 1));
 #else
     tmpDT = gfxPlatform::GetPlatform()->ScreenReferenceDrawTarget();
 #endif
 
-    FillRule fillRule = nsSVGUtils::ToFillRule(StyleSVG()->mFillRule);
+    FillRule fillRule = nsSVGUtils::ToFillRule(
+        (GetStateBits() & NS_STATE_SVG_CLIPPATH_CHILD)
+      ? StyleSVG()->mClipRule
+      : StyleSVG()->mFillRule);
     RefPtr<Path> pathInUserSpace = element->GetOrBuildPath(*tmpDT, fillRule);
     if (!pathInUserSpace) {
       return bbox;
     }
     RefPtr<Path> pathInBBoxSpace;
     if (aToBBoxUserspace.IsIdentity()) {
       pathInBBoxSpace = pathInUserSpace;
     } else {