diff --git a/package/iwinfo/src/iwinfo_wl.c b/package/iwinfo/src/iwinfo_wl.c
index 16202f629..3acfff4aa 100644
--- a/package/iwinfo/src/iwinfo_wl.c
+++ b/package/iwinfo/src/iwinfo_wl.c
@@ -489,8 +489,8 @@ int wl_get_assoclist(const char *ifname, char *buf, int *len)
 int wl_get_txpwrlist(const char *ifname, char *buf, int *len)
 {
 	struct iwinfo_txpwrlist_entry entry;
-	uint8_t dbm[8] = { 0, 6, 8, 10, 12, 14, 16, 18 };
-	uint8_t mw[8]  = { 1, 3, 6, 10, 15, 25, 39, 63 };
+	uint8_t dbm[8] = { 0, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 };
+	uint8_t mw[8]  = { 1, 3, 6, 10, 15, 25, 39, 63, 100, 158, 251 };
 	int i;
 
 	for (i = 0; i < 8; i++)