diff --git a/mozilla/xpcom/ds/nsRecyclingAllocator.h b/mozilla/xpcom/ds/nsRecyclingAllocator.h
index 54e9d6e3583..aa2c16bd133 100644
--- a/mozilla/xpcom/ds/nsRecyclingAllocator.h
+++ b/mozilla/xpcom/ds/nsRecyclingAllocator.h
@@ -76,7 +76,11 @@ class nsITimer;
 class nsIMemory;
 
 class NS_COM nsRecyclingAllocator {
+#ifdef XP_OS2
+ public:
+#else
  protected:
+#endif
     struct Block {
       PRUint32 bytes;
     };