diff --git a/install/mysql.txt b/install/mysql.txt
index 7bdd09f2e6c51b4c64db098f9a7cd0949c26b667..7038b4873e9ae799e32b1d8e1c481de3f3feb9d0 100644
--- a/install/mysql.txt
+++ b/install/mysql.txt
@@ -547,7 +547,7 @@ ALTER TABLE `vms_bettel_buchung`
  ADD PRIMARY KEY (`id`);
 
 ALTER TABLE `vms_bilanz`
- ADD PRIMARY KEY (`date`);
+ ADD PRIMARY KEY (`datum`);
 
 ALTER TABLE `vms_box_admin`
  ADD PRIMARY KEY (`id`);