diff --git a/playbook.yaml b/playbook.yaml
index 475e67a..6ea89af 100644
--- a/playbook.yaml
+++ b/playbook.yaml
@@ -15,7 +15,7 @@
     wifi_ssid: "test"
     wifi_psk: "test12345"
     wifi_int_ip: 10.1.10.1
-    LTE_con_name: LTE
+    LTE_con_name: "LTE"
     # dhcpd
     lease_time: 10800
     subnet: 10.1.10.0