diff --git a/layout/svg/SVGContextPaint.cpp b/layout/svg/SVGContextPaint.cpp
index 35d055bf5f64..0600484cd7be 100644
--- a/layout/svg/SVGContextPaint.cpp
+++ b/layout/svg/SVGContextPaint.cpp
@@ -90,8 +90,6 @@ SVGContextPaint::IsAllowedForImageFromURI(nsIURI* aURI)
  * @param aOuterContextPaint pattern information from the outer text context
  * @param aTargetPaint where to store the current pattern information
  * @param aFillOrStroke member pointer to the paint we are setting up
- * @param aProperty the frame property descriptor of the fill or stroke paint
- *   server frame
  */
 static void
 SetupInheritablePaint(const DrawTarget* aDrawTarget,
@@ -101,12 +99,11 @@ SetupInheritablePaint(const DrawTarget* aDrawTarget,
                       SVGContextPaint* aOuterContextPaint,
                       SVGContextPaintImpl::Paint& aTargetPaint,
                       nsStyleSVGPaint nsStyleSVG::*aFillOrStroke,
-                      SVGObserverUtils::PaintingPropertyDescriptor aProperty,
                       imgDrawingParams& aImgParams)
 {
   const nsStyleSVG *style = aFrame->StyleSVG();
   nsSVGPaintServerFrame *ps =
-    SVGObserverUtils::GetPaintServer(aFrame, aFillOrStroke, aProperty);
+    SVGObserverUtils::GetPaintServer(aFrame, aFillOrStroke);
 
   if (ps) {
     RefPtr<gfxPattern> pattern =
@@ -167,7 +164,7 @@ SVGContextPaintImpl::Init(const DrawTarget* aDrawTarget,
 
     SetupInheritablePaint(aDrawTarget, aContextMatrix, aFrame, opacity,
                           aOuterContextPaint, mFillPaint, &nsStyleSVG::mFill,
-                          SVGObserverUtils::FillProperty(), aImgParams);
+                          aImgParams);
 
     SetFillOpacity(opacity);
 
@@ -184,9 +181,7 @@ SVGContextPaintImpl::Init(const DrawTarget* aDrawTarget,
 
     SetupInheritablePaint(aDrawTarget, aContextMatrix, aFrame, opacity,
                           aOuterContextPaint, mStrokePaint,
-                          &nsStyleSVG::mStroke,
-                          SVGObserverUtils::StrokeProperty(),
-                          aImgParams);
+                          &nsStyleSVG::mStroke, aImgParams);
 
     SetStrokeOpacity(opacity);
 
diff --git a/layout/svg/SVGObserverUtils.cpp b/layout/svg/SVGObserverUtils.cpp
index 416da6cf9bec..d20c63793d92 100644
--- a/layout/svg/SVGObserverUtils.cpp
+++ b/layout/svg/SVGObserverUtils.cpp
@@ -646,8 +646,7 @@ SVGObserverUtils::GetEffectProperties(nsIFrame* aFrame)
 
 nsSVGPaintServerFrame *
 SVGObserverUtils::GetPaintServer(nsIFrame* aTargetFrame,
-                                 nsStyleSVGPaint nsStyleSVG::* aPaint,
-                                 PaintingPropertyDescriptor aType)
+                                 nsStyleSVGPaint nsStyleSVG::* aPaint)
 {
   // If we're looking at a frame within SVG text, then we need to look up
   // to find the right frame to get the painting property off.  We should at
@@ -668,8 +667,12 @@ SVGObserverUtils::GetPaintServer(nsIFrame* aTargetFrame,
 
   RefPtr<URLAndReferrerInfo> paintServerURL =
     SVGObserverUtils::GetPaintURI(frame, aPaint);
+  MOZ_ASSERT(aPaint == &nsStyleSVG::mFill || aPaint == &nsStyleSVG::mStroke);
+  PaintingPropertyDescriptor propDesc = (aPaint == &nsStyleSVG::mFill) ?
+                                        SVGObserverUtils::FillProperty() :
+                                        SVGObserverUtils::StrokeProperty();
   nsSVGPaintingProperty *property =
-    SVGObserverUtils::GetPaintingProperty(paintServerURL, frame, aType);
+    SVGObserverUtils::GetPaintingProperty(paintServerURL, frame, propDesc);
   if (!property)
     return nullptr;
   nsIFrame* result = property->GetReferencedFrame();
diff --git a/layout/svg/SVGObserverUtils.h b/layout/svg/SVGObserverUtils.h
index 38f313647b3a..fc4e4c343da0 100644
--- a/layout/svg/SVGObserverUtils.h
+++ b/layout/svg/SVGObserverUtils.h
@@ -534,13 +534,6 @@ public:
   NS_DECLARE_FRAME_PROPERTY_DELETABLE(BackgroundImageProperty,
                                       URIObserverHashtable)
 
-  /**
-   * Get the paint server for a aTargetFrame.
-   */
-  static nsSVGPaintServerFrame *GetPaintServer(nsIFrame* aTargetFrame,
-                                               nsStyleSVGPaint nsStyleSVG::* aPaint,
-                                               PaintingPropertyDescriptor aProperty);
-
   struct EffectProperties {
     SVGFilterObserverListForCSSProp* mFilterObservers;
     SVGMaskObserverList* mMaskObservers;
@@ -684,6 +677,12 @@ public:
   static void InvalidateDirectRenderingObservers(Element* aElement, uint32_t aFlags = 0);
   static void InvalidateDirectRenderingObservers(nsIFrame* aFrame, uint32_t aFlags = 0);
 
+  /**
+   * Get the paint server for a aTargetFrame.
+   */
+  static nsSVGPaintServerFrame *GetPaintServer(nsIFrame* aTargetFrame,
+                                               nsStyleSVGPaint nsStyleSVG::* aPaint);
+
   /**
    * Get an SVGMarkerObserver for the frame, creating a fresh one if necessary
    */
diff --git a/layout/svg/nsSVGUtils.cpp b/layout/svg/nsSVGUtils.cpp
index 5dc166950041..64a3da024d1f 100644
--- a/layout/svg/nsSVGUtils.cpp
+++ b/layout/svg/nsSVGUtils.cpp
@@ -1500,8 +1500,7 @@ nsSVGUtils::MakeFillPatternFor(nsIFrame* aFrame,
   const DrawTarget* dt = aContext->GetDrawTarget();
 
   nsSVGPaintServerFrame *ps =
-    SVGObserverUtils::GetPaintServer(aFrame, &nsStyleSVG::mFill,
-                                     SVGObserverUtils::FillProperty());
+    SVGObserverUtils::GetPaintServer(aFrame, &nsStyleSVG::mFill);
 
   if (ps) {
     RefPtr<gfxPattern> pattern =
@@ -1576,8 +1575,7 @@ nsSVGUtils::MakeStrokePatternFor(nsIFrame* aFrame,
   const DrawTarget* dt = aContext->GetDrawTarget();
 
   nsSVGPaintServerFrame *ps =
-    SVGObserverUtils::GetPaintServer(aFrame, &nsStyleSVG::mStroke,
-                                     SVGObserverUtils::StrokeProperty());
+    SVGObserverUtils::GetPaintServer(aFrame, &nsStyleSVG::mStroke);
 
   if (ps) {
     RefPtr<gfxPattern> pattern =