diff --git a/main.py b/main.py
index 8cecd9e..3d54690 100755
--- a/main.py
+++ b/main.py
@@ -536,7 +536,7 @@ def pullLoop(modem):
     
     while not DISABLE_BY_MONTHLY_LIMIT:
         signalStrength = modem.signalStrength
-        saveSignalStrengthToRedis(signalStrengh)
+        saveSignalStrengthToRedis(signalStrength)
     
         if TERMINATING:
             logger.info('Terminated by request signal')