--- builds/install/misc/firebird.conf.in.orig	2020-10-12 00:02:22 UTC
+++ builds/install/misc/firebird.conf.in
@@ -189,7 +189,7 @@
 #
 # Type: string (special format)
 #
-#UdfAccess = Restrict UDF
+UdfAccess = Restrict %%PREFIX%%/libexec/firebird/udf
 
 
 # ----------------------------