diff --git a/sms_functions.py b/sms_functions.py
index 4c4502f..7582f4e 100644
--- a/sms_functions.py
+++ b/sms_functions.py
@@ -46,7 +46,7 @@ def get_modem_pin():
 
     for p in paths:
         if os.path.isfile(p):
-            return read_modem_pin(fpath)
+            return read_modem_pin(p)
 
     raise Exception('modem_pin.txt not found in any directory')