diff --git a/mozilla/xpcom/libxpt/xptcall/public/xptcall.h b/mozilla/xpcom/libxpt/xptcall/public/xptcall.h
index 933e8fab162..fae4f7bfa04 100644
--- a/mozilla/xpcom/libxpt/xptcall/public/xptcall.h
+++ b/mozilla/xpcom/libxpt/xptcall/public/xptcall.h
@@ -90,7 +90,7 @@ struct nsXPTCVariant : public nsXPTCMiniVariant
     // inherits 'val' here
     void*     ptr;
     nsXPTType type;
-    uint8     flags;
+    PRUint8   flags;
 
     enum
     {
diff --git a/mozilla/xpcom/reflect/xptcall/public/xptcall.h b/mozilla/xpcom/reflect/xptcall/public/xptcall.h
index 933e8fab162..fae4f7bfa04 100644
--- a/mozilla/xpcom/reflect/xptcall/public/xptcall.h
+++ b/mozilla/xpcom/reflect/xptcall/public/xptcall.h
@@ -90,7 +90,7 @@ struct nsXPTCVariant : public nsXPTCMiniVariant
     // inherits 'val' here
     void*     ptr;
     nsXPTType type;
-    uint8     flags;
+    PRUint8   flags;
 
     enum
     {