diff --git a/src/cas/generic/casdef.h b/src/cas/generic/casdef.h
index 5cd728c03..91a483ba3 100644
--- a/src/cas/generic/casdef.h
+++ b/src/cas/generic/casdef.h
@@ -510,7 +510,7 @@ public:
     void destroyRequest ();
     
 private:
-    casPVI * pPVI;
+    class casPVI * pPVI;
     casPV & operator = ( const casPV & );
 
     friend class casStrmClient;
diff --git a/src/cas/generic/ioBlocked.h b/src/cas/generic/ioBlocked.h
index f581eab69..b2c684123 100644
--- a/src/cas/generic/ioBlocked.h
+++ b/src/cas/generic/ioBlocked.h
@@ -37,7 +37,7 @@ public:
 	ioBlocked ();
 	virtual ~ioBlocked ();
 private:
-	ioBlockedList * pList;
+	class ioBlockedList * pList;
 	virtual void ioBlockedSignal ();
 };