diff --git a/src/server/pva/sharedstate.h b/src/server/pva/sharedstate.h
index 58ca149..dd85c24 100644
--- a/src/server/pva/sharedstate.h
+++ b/src/server/pva/sharedstate.h
@@ -25,7 +25,7 @@ namespace epics{namespace pvAccess{
 class ChannelProvider;
 class Channel;
 class ChannelRequester;
-class ChannelBaseRequester;
+struct ChannelBaseRequester;
 class GetFieldRequester;
 void providerRegInit(void*);
 }} // epics::pvAccess