diff --git a/mozilla/string/public/nsStringFragment.h b/mozilla/string/public/nsStringFragment.h
index 647a99abc1d..2f61d1a4f9f 100644
--- a/mozilla/string/public/nsStringFragment.h
+++ b/mozilla/string/public/nsStringFragment.h
@@ -83,7 +83,7 @@ struct nsReadableFragment
     void
     SetID( void* id )
       {
-        mFragmentidentifier = id;
+        mFragmentIdentifier = id;
       }
 
     void
diff --git a/mozilla/xpcom/string/public/nsStringFragment.h b/mozilla/xpcom/string/public/nsStringFragment.h
index 647a99abc1d..2f61d1a4f9f 100644
--- a/mozilla/xpcom/string/public/nsStringFragment.h
+++ b/mozilla/xpcom/string/public/nsStringFragment.h
@@ -83,7 +83,7 @@ struct nsReadableFragment
     void
     SetID( void* id )
       {
-        mFragmentidentifier = id;
+        mFragmentIdentifier = id;
       }
 
     void