diff --git a/install/mysql.txt b/install/mysql.txt
index 7038b4873e9ae799e32b1d8e1c481de3f3feb9d0..8984240f237dcc0cf91965f460f5933faed4e8f3 100644
--- a/install/mysql.txt
+++ b/install/mysql.txt
@@ -546,9 +546,6 @@ ALTER TABLE `vms_aktivierungen`
 ALTER TABLE `vms_bettel_buchung`
  ADD PRIMARY KEY (`id`);
 
-ALTER TABLE `vms_bilanz`
- ADD PRIMARY KEY (`datum`);
-
 ALTER TABLE `vms_box_admin`
  ADD PRIMARY KEY (`id`);