diff --git a/wifi/configs_test.py b/wifi/configs_test.py
index 64e05c6..016fc27 100755
--- a/wifi/configs_test.py
+++ b/wifi/configs_test.py
@@ -11,9 +11,9 @@
 
 
 _FREQ_LIST = {
-    '2.4': '2412,2417,2422,2427,2432,2437,2442,2447,2452,2457,2462',
-    '5': ('5180,5200,5220,5240,5745,5765,5785,5805,5825,5260,5280,5300,5320,'
-          '5500,5520,5540,5560,5580,5660,5680,5700'),
+    '2.4': '2412 2417 2422 2427 2432 2437 2442 2447 2452 2457 2462',
+    '5': ('5180 5200 5220 5240 5745 5765 5785 5805 5825 5260 5280 5300 5320 '
+          '5500 5520 5540 5560 5580 5660 5680 5700'),
 }