diff --git a/content/base/src/nsDocument.cpp b/content/base/src/nsDocument.cpp
index 625bfc9a4d2c..72a0667488a5 100644
--- a/content/base/src/nsDocument.cpp
+++ b/content/base/src/nsDocument.cpp
@@ -9682,6 +9682,12 @@ nsDocument::DocSizeOfExcludingThis(nsWindowSizes* aWindowSizes) const
     mAttrStyleSheet->DOMSizeOfIncludingThis(aWindowSizes->mMallocSizeOf) :
     0;
 
+  aWindowSizes->mDOMOther +=
+    mStyledLinks.SizeOfExcludingThis(NULL, aWindowSizes->mMallocSizeOf);
+
+  aWindowSizes->mDOMOther +=
+    mIdentifierMap.SizeOfExcludingThis(NULL, aWindowSizes->mMallocSizeOf);
+
   // Measurement of the following members may be added later if DMD finds it
   // is worthwhile:
   // - many!