diff --git a/src/main.ino b/src/main.ino
index 27501e0..a541580 100644
--- a/src/main.ino
+++ b/src/main.ino
@@ -396,6 +396,8 @@ String get_encryption_type(wifi_auth_mode_t encryptionType) {
             return "WPA_WPA2_PSK";
         case (WIFI_AUTH_WPA2_ENTERPRISE):
             return "WPA2_ENTERPRISE";
+        default:
+            return "Unknown";
     }
 }