diff --git a/src/things/semester.ts b/src/things/semester.ts
index 2a562ba8..9a341fd7 100644
--- a/src/things/semester.ts
+++ b/src/things/semester.ts
@@ -29,7 +29,7 @@ export interface SCSemesterWithoutReferences
    * The short name of the semester, using the given pattern.
    *
    * @filterable
-   * @pattern ^(WS|SS) [0-9]{4}(/[0-9]{2})?$
+   * @pattern ^(WS|SS|WiSe|SoSe) [0-9]{4}(/[0-9]{2})?$
    * @keyword
    */
   acronym: string;