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-rw-r--r--epan/dissectors/packet-ieee80211-radiotap.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/epan/dissectors/packet-ieee80211-radiotap.c b/epan/dissectors/packet-ieee80211-radiotap.c
index e520704d08..a8193e7122 100644
--- a/epan/dissectors/packet-ieee80211-radiotap.c
+++ b/epan/dissectors/packet-ieee80211-radiotap.c
@@ -1833,7 +1833,7 @@ dissect_radiotap(tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree, void* u
tvb, offset, 12, rate,
"Data Rate: %.1f Mb/s", rate);
PROTO_ITEM_SET_GENERATED(rate_ti);
- if (ieee80211_vhtvalid[mcs].valid[bandwidth][nss] == FALSE)
+ if (ieee80211_vhtvalid[mcs].valid[bandwidth][nss-1] == FALSE)
expert_add_info(pinfo, rate_ti, &ei_radiotap_invalid_data_rate);
}