diff --git a/content/svg/content/src/nsSVGElement.h b/content/svg/content/src/nsSVGElement.h
index eeb424702d7..c89f6f5d017 100644
--- a/content/svg/content/src/nsSVGElement.h
+++ b/content/svg/content/src/nsSVGElement.h
@@ -143,6 +143,9 @@ protected:
   static PRBool IsGraphicElementEventName(nsIAtom* aName);
   static nsIAtom* GetEventNameForAttr(nsIAtom* aAttr);
 
+  // The following two structures should be protected, but VC6
+  // doesn't allow children of nsSVGElement to access them.
+public:
   struct LengthInfo {
     nsIAtom** mName;
     float     mDefaultValue;
@@ -162,6 +165,7 @@ protected:
       {}
   };
 
+protected:
   virtual LengthAttributesInfo GetLengthInfo();
 
   nsCOMPtr<nsICSSStyleRule> mContentStyleRule;
diff --git a/content/svg/content/src/nsSVGLength2.h b/content/svg/content/src/nsSVGLength2.h
index c72e2cceac2..8b0a4741c27 100644
--- a/content/svg/content/src/nsSVGLength2.h
+++ b/content/svg/content/src/nsSVGLength2.h
@@ -46,6 +46,13 @@
 
 class nsSVGLength2
 {
+  // Needed to allow member classes access to our data.
+  // gcc/vc8 allow access without this.
+  struct DOMBaseVal;
+  struct DOMAnimVal;
+  friend struct DOMBaseVal;
+  friend struct DOMAnimVal;
+
 public:
   void Init(PRUint8 aCtxType = nsSVGUtils::XY,
             PRUint8 aAttrEnum = 0xff,