diff --git a/src/ca/access.cpp b/src/ca/access.cpp
index 59e046771..2c9c3ff31 100644
--- a/src/ca/access.cpp
+++ b/src/ca/access.cpp
@@ -295,9 +295,8 @@ extern "C" dbEventSubscription pvEventQueueAddEventNoop (dbEventCtx, pvId,
 {
     return NULL;
 }
-extern "C" int pvEventQueuePostSingleEventNoop (dbEventSubscription)
+extern "C" void pvEventQueuePostSingleEventNoop (dbEventSubscription)
 {
-    return -1;
 }
 extern "C" void pvEventQueueCancelEventNoop (dbEventSubscription)
 {