diff --git a/src/ca/test_event.c b/src/ca/test_event.c
index 999ce946e..77730e6a5 100644
--- a/src/ca/test_event.c
+++ b/src/ca/test_event.c
@@ -19,7 +19,7 @@ static char *sccsId = "$Id$";
 #include	"iocinf.h"
 
 
-void APIENTRY ca_test_event(struct event_handler_args args)
+void epicsAPI ca_test_event(struct event_handler_args args)
 {
   ca_printf("CAC: ~~~### in test event for [%s] ###~~~\n",args.chid+1);
   ca_printf("CAC: User argument\t%x\n", args.usr);