diff --git a/src/rsrv/online_notify.c b/src/rsrv/online_notify.c
index 0c47ddfcb..1ae34b911 100644
--- a/src/rsrv/online_notify.c
+++ b/src/rsrv/online_notify.c
@@ -50,6 +50,8 @@
 
 #include "server.h"
 
+int casSufficentSpaceInPool = TRUE;
+
 /*
  * forcePort ()
  */
diff --git a/src/rsrv/server.h b/src/rsrv/server.h
index 4819cd56a..ffd2dd85f 100644
--- a/src/rsrv/server.h
+++ b/src/rsrv/server.h
@@ -191,7 +191,7 @@ GLBLTYPE unsigned           rsrvSizeofLargeBufTCP;
 
 #define CAS_HASH_TABLE_SIZE 4096
 
-GLBLTYPE int casSufficentSpaceInPool;
+extern int casSufficentSpaceInPool;
 
 #define SEND_LOCK(CLIENT) epicsMutexMustLock((CLIENT)->lock)
 #define SEND_UNLOCK(CLIENT) epicsMutexUnlock((CLIENT)->lock)