diff -urN madwifi-ng-r2377-20070526.old/net80211/ieee80211_scan.c madwifi-ng-r2377-20070526.dev/net80211/ieee80211_scan.c
--- madwifi-ng-r2377-20070526.old/net80211/ieee80211_scan.c	2007-05-17 03:01:29.000000000 +0200
+++ madwifi-ng-r2377-20070526.dev/net80211/ieee80211_scan.c	2007-05-26 18:51:08.754756616 +0200
@@ -291,7 +291,8 @@
 	struct ieee80211com *ic = vap->iv_ic;
 	int delay;
 
-	ieee80211_sta_pwrsave(vap, 1);
+	if (vap->iv_opmode != IEEE80211_M_IBSS) 
+	    ieee80211_sta_pwrsave(vap, 1);
 	/*
 	 * Use an initial 1ms delay to ensure the null
 	 * data frame has a chance to go out.