--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -56,7 +56,7 @@
  * also linked into the probe response struct.
  */
 
-#define IEEE80211_SCAN_RESULT_EXPIRE	(7 * HZ)
+#define IEEE80211_SCAN_RESULT_EXPIRE	(30 * HZ)
 
 static void bss_free(struct cfg80211_internal_bss *bss)
 {