diff --git a/src/WINNT/afsd/cm_callback.c b/src/WINNT/afsd/cm_callback.c
index c69e63062b..266b71404b 100644
--- a/src/WINNT/afsd/cm_callback.c
+++ b/src/WINNT/afsd/cm_callback.c
@@ -1820,6 +1820,9 @@ long cm_CBServersUp(cm_scache_t *scp, time_t * downTime)
         return 1;
 
     volp = cm_GetVolumeByFID(&scp->fid);
+    if (!volp)
+        return 1;
+
     if (volp->rw.ID == volID) {
         statep = &volp->rw;
     } else if (volp->ro.ID == volID) {