diff --git a/khal/khalendar/exceptions.py b/khal/khalendar/exceptions.py
index 844472c75..365b0228e 100644
--- a/khal/khalendar/exceptions.py
+++ b/khal/khalendar/exceptions.py
@@ -38,7 +38,7 @@ class ReadOnlyCalendarError(Error):
     khal"""
 
 
-class EtagMissmatch(Error):
+class EtagMismatch(Error):
     """An event is trying to be modified from khal which has also been externally
     modified"""
 
diff --git a/khal/khalendar/khalendar.py b/khal/khalendar/khalendar.py
index 22aed97b6..94e3eda86 100644
--- a/khal/khalendar/khalendar.py
+++ b/khal/khalendar/khalendar.py
@@ -40,7 +40,7 @@
 from .event import Event
 from .exceptions import (
     DuplicateUid,
-    EtagMissmatch,
+    EtagMismatch,
     NonUniqueUID,
     ReadOnlyCalendarError,
     UnsupportedFeatureError,
@@ -237,7 +237,7 @@ def delete(self, href: str, etag: str | None, calendar: str) -> None:
         try:
             self._storages[calendar].delete(href, etag)
         except WrongEtagError:
-            raise EtagMissmatch()
+            raise EtagMismatch()
         self._backend.delete(href, calendar=calendar)
 
     def delete_instance(
@@ -255,7 +255,7 @@ def delete_instance(
             raise ReadOnlyCalendarError()
         event = self.get_event(href, calendar)
         if etag and etag != event.etag:
-            raise EtagMissmatch()
+            raise EtagMismatch()
 
         event.delete_instance(rec_id)
         self.update(event)