--- a/layout/svg/nsSVGUtils.cpp
+++ b/layout/svg/nsSVGUtils.cpp
@@ -1304,16 +1304,21 @@ nsSVGUtils::CanOptimizeOpacity(nsIFrame 
   // XXX The SVG WG is intending to allow fill, stroke and markers on <image>
   if (type == LayoutFrameType::SVGImage) {
     return true;
   }
   const nsStyleSVG *style = aFrame->StyleSVG();
   if (style->HasMarker()) {
     return false;
   }
+
+  if (nsLayoutUtils::HasAnimationOfProperty(aFrame, eCSSProperty_opacity)) {
+    return false;
+  }
+
   if (!style->HasFill() || !HasStroke(aFrame)) {
     return true;
   }
   return false;
 }
 
 gfxMatrix
 nsSVGUtils::AdjustMatrixForUnits(const gfxMatrix &aMatrix,