diff --git a/pySim-shell.py b/pySim-shell.py
index 6e59e589..36cb839b 100755
--- a/pySim-shell.py
+++ b/pySim-shell.py
@@ -373,7 +373,7 @@ Online manual available at https://downloads.osmocom.org/docs/pysim/master/html/
         first = True
         while 1:
             # TODO: Count consecutive failures, if more than N consecutive failures occur, then stop.
-            # The ratinale is: There may be a problem with the device, we do want to prevent that
+            # The rationale is: There may be a problem with the device, we do want to prevent that
             # all remaining cards are fired to the error bin. This is only relevant for situations
             # with large stacks, probably we do not need this feature right now.