diff --git a/signer/config.json b/signer/config.json
index 863e9fdbc..ffdaf4144 100644
--- a/signer/config.json
+++ b/signer/config.json
@@ -20,8 +20,8 @@
 	],
 	"known_devices": [
 		["0x534c", "0x0001", "Trezor"],
-                ["0x1209", "0x53C0", "Trezor2 Bootloader"],
-                ["0x1209", "0x53C1", "Trezor2"]
+		["0x1209", "0x53c0", "Trezor2 Bootloader"],
+		["0x1209", "0x53c1", "Trezor2"]
 	],
 	"valid_days": 180
 }