diff --git a/src/c3nav/mapdata/models/update.py b/src/c3nav/mapdata/models/update.py
index ec2aaa41..ec154e83 100644
--- a/src/c3nav/mapdata/models/update.py
+++ b/src/c3nav/mapdata/models/update.py
@@ -133,7 +133,7 @@ class MapUpdate(models.Model):
                 new_update.save()
 
             transaction.on_commit(
-                lambda: cache.set('mapdata:last_processed_updatee', new_updates[-1].to_tuple, 300)
+                lambda: cache.set('mapdata:last_processed_update', new_updates[-1].to_tuple, 300)
             )
 
             return new_updates