diff --git a/layout/generic/nsImageFrame.cpp b/layout/generic/nsImageFrame.cpp
index 2063c7484e3..fc232b49451 100644
--- a/layout/generic/nsImageFrame.cpp
+++ b/layout/generic/nsImageFrame.cpp
@@ -731,7 +731,7 @@ nsImageFrame::FrameChanged(imgIRequest *aRequest,
 }
 
 void
-nsImageFrame::EnsureIntrinsicSizeAndRatio(nsPresContext* aPresContext)
+nsImageFrame::EnsureIntrinsicSizeAndRatio()
 {
   // If mIntrinsicSize.width and height are 0, then we need to update from the
   // image container.
@@ -771,8 +771,7 @@ nsImageFrame::ComputeSize(nsRenderingContext *aRenderingContext,
                           const LogicalSize& aPadding,
                           uint32_t aFlags)
 {
-  nsPresContext *presContext = PresContext();
-  EnsureIntrinsicSizeAndRatio(presContext);
+  EnsureIntrinsicSizeAndRatio();
 
   nsCOMPtr<nsIImageLoadingContent> imageLoader = do_QueryInterface(mContent);
   NS_ASSERTION(imageLoader, "No content node??");
@@ -849,8 +848,7 @@ nsImageFrame::GetMinISize(nsRenderingContext *aRenderingContext)
   // min-height, and max-height properties.
   DebugOnly<nscoord> result;
   DISPLAY_MIN_WIDTH(this, result);
-  nsPresContext *presContext = PresContext();
-  EnsureIntrinsicSizeAndRatio(presContext);
+  EnsureIntrinsicSizeAndRatio();
   return mIntrinsicSize.width.GetUnit() == eStyleUnit_Coord ?
     mIntrinsicSize.width.GetCoordValue() : 0;
 }
@@ -862,8 +860,7 @@ nsImageFrame::GetPrefISize(nsRenderingContext *aRenderingContext)
   // min-height, and max-height properties.
   DebugOnly<nscoord> result;
   DISPLAY_PREF_WIDTH(this, result);
-  nsPresContext *presContext = PresContext();
-  EnsureIntrinsicSizeAndRatio(presContext);
+  EnsureIntrinsicSizeAndRatio();
   // convert from normal twips to scaled twips (printing...)
   return mIntrinsicSize.width.GetUnit() == eStyleUnit_Coord ?
     mIntrinsicSize.width.GetCoordValue() : 0;
diff --git a/layout/generic/nsImageFrame.h b/layout/generic/nsImageFrame.h
index 6efe84676dd..8be688ab4a5 100644
--- a/layout/generic/nsImageFrame.h
+++ b/layout/generic/nsImageFrame.h
@@ -173,7 +173,7 @@ public:
 protected:
   virtual ~nsImageFrame();
 
-  void EnsureIntrinsicSizeAndRatio(nsPresContext* aPresContext);
+  void EnsureIntrinsicSizeAndRatio();
 
   virtual mozilla::LogicalSize
   ComputeSize(nsRenderingContext *aRenderingContext,