1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2500pci.c b/drivers/net/wireless/rt2x00/rt2500pci.c
index fa8669f5c965..c8c6a848be97 100644
--- a/drivers/net/wireless/rt2x00/rt2500pci.c
+++ b/drivers/net/wireless/rt2x00/rt2500pci.c
@@ -277,7 +277,7 @@ static void rt2500pci_config_type(struct rt2x00_dev *rt2x00dev, const int type,
          */
         rt2x00pci_register_read(rt2x00dev, BCNCSR1, &reg);
         rt2x00_set_field32(&reg, BCNCSR1_PRELOAD,
-                           PREAMBLE + get_duration(IEEE80211_HEADER, 2));
+                           PREAMBLE + get_duration(IEEE80211_HEADER, 20));
         rt2x00_set_field32(&reg, BCNCSR1_BEACON_CWMIN,
                            rt2x00lib_get_ring(rt2x00dev,
                                               IEEE80211_TX_QUEUE_BEACON)