diff --git a/drivers/net/wireless/ath5k/debug.c b/drivers/net/wireless/ath5k/debug.c
index 9770bb3d40f9..4904a07e4b59 100644
--- a/drivers/net/wireless/ath5k/debug.c
+++ b/drivers/net/wireless/ath5k/debug.c
@@ -424,7 +424,7 @@ ath5k_debug_dump_bands(struct ath5k_softc *sc)
 
 	for (b = 0; b < IEEE80211_NUM_BANDS; b++) {
 		struct ieee80211_supported_band *band = &sc->sbands[b];
-		char bname[5];
+		char bname[6];
 		switch (band->band) {
 		case IEEE80211_BAND_2GHZ:
 			strcpy(bname, "2 GHz");