diff --git a/OPSI/control b/OPSI/control
index 8510eef..9688976 100644
--- a/OPSI/control
+++ b/OPSI/control
@@ -21,6 +21,15 @@ onceScript:
 customScript: 
 userLoginScript: 
 
+[ProductProperty]
+type: unicode
+name: install_architecture
+multivalue: False
+editable: False
+description: which architecture (32/64 bit) has to be installed
+values: ["32 only", "64 only", "both", "system specific"]
+default: ["system specific"]
+
 [ProductDependency]
 action: setup
 requiredProduct: aio