diff --git a/aleksis/apps/chronos/frontend/messages/en.json b/aleksis/apps/chronos/frontend/messages/en.json
index 83c0f55b9a19123465730dc9938606334c3d3a89..3102d3a54376860ff2607f7088e59421cbd48ed1 100644
--- a/aleksis/apps/chronos/frontend/messages/en.json
+++ b/aleksis/apps/chronos/frontend/messages/en.json
@@ -55,8 +55,8 @@
           "groups": "Filter by groups"
         },
         "cancel": {
-          "cancel": "Mark lesson as cancelled",
-          "decancel": "Mark lesson as not cancelled"
+          "cancel": "Mark as cancelled",
+          "decancel": "Mark as not cancelled"
         }
       }
     }