diff --git a/tables.sql b/tables.sql
index 79f1eb9..3b159e6 100644
--- a/tables.sql
+++ b/tables.sql
@@ -12,8 +12,8 @@ create table SETTINGS(
     constraint FK_DEFAULT_REFIMG_MODEL foreign key (DEFAULT_REFIMG_MODEL) references AI_MODEL(ID),
     constraint FK_DEFAULT_SCAN_MODEL foreign key (DEFAULT_SCAN_MODEL) references AI_MODEL(ID) );
 
-create table PA_PREF ( PA_USER_ID integer, PATH_TYPE varchar(16), NOO varchar(16), GROUPING varchar(16), HOW_MANY integer, ST_OFFSET integer, SIZE integer, FOLDERS Boolean,
-    constraint PK_PA_USER_ID_PATH_TYPE primary key(PA_USER_ID, PATH_TYPE ) );
+create table PA_PREF ( PA_USER_DN varchar(128), PATH_TYPE varchar(16), NOO varchar(16), GROUPING varchar(16), HOW_MANY integer, ST_OFFSET integer, SIZE integer, FOLDERS Boolean,
+    constraint PK_PA_USER_DN_PATH_TYPE primary key(PA_USER_DN, PATH_TYPE ) );
 
 create table PA_USER( ID integer, dn varchar, 
     constraint PK_PA_USER_ID primary key(ID) );