diff --git a/migration/315-trunk/007_fix_size_window_business_partner.sql b/migration/315-trunk/007_fix_size_window_business_partner.sql
new file mode 100644
index 0000000000..0dc8ed35ad
--- /dev/null
+++ b/migration/315-trunk/007_fix_size_window_business_partner.sql
@@ -0,0 +1,6 @@
+UPDATE AD_WINDOW
+   SET winheight = NULL,
+       winwidth = NULL
+ WHERE ad_window_id = 123;
+ 
+COMMIT ;
\ No newline at end of file