diff --git a/test/testudrkit.sql b/test/testudrkit.sql
index 7c30874..f9e5e24 100644
--- a/test/testudrkit.sql
+++ b/test/testudrkit.sql
@@ -5,7 +5,8 @@ set names UTF8;
 input recreate_db.ddl;
 
 -- deploy the UDR library
-shell cp --dereference ../build/x86_64-linux/libMyFirstUDRKit.so /opt/firebird/plugins/udr/ ;
+-- (Note it is not possible to use the long form of -L here due to the double-dash
+shell cp -L ../build/x86_64-linux/libMyFirstUDRKit.so /opt/firebird/plugins/udr/ ;
 
 -- declare the UDR library - must be done before we declare
 -- database objects that reference functions in the library!