diff --git a/src/ioc/db/dbLockPvt.h b/src/ioc/db/dbLockPvt.h
index 86d186619..f7e6a04c3 100644
--- a/src/ioc/db/dbLockPvt.h
+++ b/src/ioc/db/dbLockPvt.h
@@ -84,9 +84,10 @@ struct dbLocker {
     lockRecordRef refs[DBLOCKER_NALLOC]; /* actual length is maxrefs */
 };
 
-lockSet* dbLockGetRef(lockRecord *lr); /* lookup lockset and increment ref count */
-void dbLockIncRef(lockSet* ls);
-void dbLockDecRef(lockSet *ls);
+/* These are exported for testing only */
+epicsShareFunc lockSet* dbLockGetRef(lockRecord *lr); /* lookup lockset and increment ref count */
+epicsShareFunc void dbLockIncRef(lockSet* ls);
+epicsShareFunc void dbLockDecRef(lockSet *ls);
 
 /* Calling dbLockerPrepare directly is an internal
  * optimization used when dbLocker on the stack.