diff --git a/drivers/atm/firestream.c b/drivers/atm/firestream.c
index 47c57a4294b7..98099f526d82 100644
--- a/drivers/atm/firestream.c
+++ b/drivers/atm/firestream.c
@@ -978,6 +978,7 @@ static int fs_open(struct atm_vcc *atm_vcc)
 		/* Docs are vague about this atm_hdr field. By the way, the FS
 		 * chip makes odd errors if lower bits are set.... -- REW */
 		tc->atm_hdr =  (vpi << 20) | (vci << 4); 
+		tmc0 = 0;
 		{
 			int pcr = atm_pcr_goal (txtp);