diff --git a/tb/shinTest/gen_pkt.py b/tb/shinTest/gen_pkt.py
index 4024e19..073b8bc 100755
--- a/tb/shinTest/gen_pkt.py
+++ b/tb/shinTest/gen_pkt.py
@@ -719,7 +719,7 @@ if __name__ == '__main__':
         data[i] = i + 1
     genPkt.addSubPkt(random.randint(0, 2048), 0, 0x00c0, 0xf, 4, data)
 
-    gen_file_def = " "
+    gen_file_def = "bc_rw_pkt"
     sm_idx = 0
 
     genPkt.addAfterExc(genWriteTransLenCode(gen_file_def, sm_idx)