diff --git a/src/libCom/osi/osiRing.h b/src/libCom/osi/osiRing.h
index 696dd4b1e..23de1e8a3 100644
--- a/src/libCom/osi/osiRing.h
+++ b/src/libCom/osi/osiRing.h
@@ -39,4 +39,6 @@ epicsShareFunc int     epicsShareAPI ringIsFull(ringId id);
     If there is a single reader it is not necessary to lock for puts
 */
 
+#include "osdRing.h"
+
 #endif /* INCosiRingh */