diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/property_type/PropertyTypeAssignmentForm.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/property_type/PropertyTypeAssignmentForm.java
index c95c693815fb2ac82d77a341c4989194ce890278..774c2a2fa7023fa4523687bdc4af3293cb5b114b 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/property_type/PropertyTypeAssignmentForm.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/property_type/PropertyTypeAssignmentForm.java
@@ -223,7 +223,7 @@ public final class PropertyTypeAssignmentForm extends LayoutContainer implements
             {
                 public void handleEvent(BaseEvent be)
                 {
-                    scriptChooser.setValue("");
+                    scriptChooser.setRawValue("");
                 }
             });
         return result;