diff --git a/check_modem.py b/check_modem.py
index 2961eff..cae4da8 100755
--- a/check_modem.py
+++ b/check_modem.py
@@ -56,7 +56,7 @@ if __name__ == "__main__":
     print(status)
     
     # return code: if registered and signal > 0, return 0
-    if modem.State in [ MM_MODEM_STATE_REGISTERED, MM_MODEM_STATE_CONNECTED ] and modem.SignalQuality[0] > 0 and modem.RegistrationState == 1:
+    if modem.GetStatus()["state"] in [ MM_MODEM_STATE_REGISTERED, MM_MODEM_STATE_CONNECTED ] and modem.SignalQuality[0] > 0 and modem.RegistrationState == 1:
         exit(0)
     else:
         exit(1)