diff --git a/src/as/asTrapWrite.c b/src/as/asTrapWrite.c
index 5fafc0181..02f69163d 100644
--- a/src/as/asTrapWrite.c
+++ b/src/as/asTrapWrite.c
@@ -24,10 +24,11 @@ of this distribution.
 #include "ellLib.h"
 #include "freeList.h"
 #include "cantProceed.h"
-#include "asLib.h"
-#include "asTrapWrite.h"
 #include "osiSem.h"
 #include "ellLib.h"
+#define epicsExportSharedSymbols
+#include "asLib.h"
+#include "asTrapWrite.h"
 
 typedef struct listenerPvt {
     ELLNODE node;