diff --git a/net/sched/act_simple.c b/net/sched/act_simple.c
index fbde461..64b2d13 100644
--- a/net/sched/act_simple.c
+++ b/net/sched/act_simple.c
@@ -115,7 +115,7 @@
 		return -EINVAL;
 
 	datalen = nla_len(tb[TCA_DEF_DATA]);
-	if (datalen <= 0)
+	if (datalen == 0)
 		return -EINVAL;
 
 	pc = tcf_hash_check(parm->index, a, bind, &simp_hash_info);