diff --git a/src/ca/oldAccess.h b/src/ca/oldAccess.h
index 87408d3d2..67671d484 100644
--- a/src/ca/oldAccess.h
+++ b/src/ca/oldAccess.h
@@ -29,7 +29,7 @@
 
 struct oldChannelNotify : public cacChannelNotify {
 public:
-    oldChannelNotify ( class oldCAC &, const char *pName, 
+    oldChannelNotify ( struct oldCAC &, const char *pName, 
         caCh *pConnCallBackIn, void *pPrivateIn, capri priority );
     void destroy ();
     void setPrivatePointer ( void * );
@@ -183,7 +183,7 @@ private:
     static epicsMutex freeListMutex;
 };
 
-class oldCAC : public cacNotify
+struct oldCAC : public cacNotify
 {
 public:
     oldCAC ( bool enablePreemptiveCallback = false );
@@ -218,6 +218,7 @@ public:
     int vPrintf ( const char *pformat, va_list args ) const;
     void vSignal ( int ca_status, const char *pfilenm, 
                      int lineno, const char *pFormat, va_list args );
+    bool preemptiveCallbakIsEnabled () const;
 private:
     mutable epicsMutex mutex; 
     cac & clientCtx;
@@ -511,4 +512,9 @@ inline void oldCAC::selfTest ()
     this->clientCtx.selfTest ();
 }
 
+inline bool oldCAC::preemptiveCallbakIsEnabled () const
+{
+    return this->clientCtx.preemptiveCallbakIsEnabled ();
+}
+
 #endif // ifndef oldAccessh