diff --git a/hw/scsi/lsi53c895a.c b/hw/scsi/lsi53c895a.c
index 72f7b59ab5eb58dcff9c27803121b2b642138e06..88bccf2b4cdcc7c92b46dbcf871a51f7ea252042 100644
--- a/hw/scsi/lsi53c895a.c
+++ b/hw/scsi/lsi53c895a.c
@@ -620,8 +620,7 @@ static void lsi_do_dma(LSIState *s, int out)
     dma_addr_t addr;
     SCSIDevice *dev;
 
-    assert(s->current);
-    if (!s->current->dma_len) {
+    if (!s->current || !s->current->dma_len) {
         /* Wait until data is available.  */
         trace_lsi_do_dma_unavailable();
         return;
@@ -1028,8 +1027,9 @@ static void lsi_do_msgout(LSIState *s)
         case 0x0d:
             /* The ABORT TAG message clears the current I/O process only. */
             trace_lsi_do_msgout_abort(current_tag);
-            if (current_req) {
+            if (current_req && current_req->req) {
                 scsi_req_cancel(current_req->req);
+                current_req = NULL;
             }
             lsi_disconnect(s);
             break;
@@ -1055,6 +1055,7 @@ static void lsi_do_msgout(LSIState *s)
             /* clear the current I/O process */
             if (s->current) {
                 scsi_req_cancel(s->current->req);
+                current_req = NULL;
             }
 
             /* As the current implemented devices scsi_disk and scsi_generic