diff --git a/sql/20_tbs_details.sql b/sql/20_tbs_details.sql
index a941da8..360bd04 100644
--- a/sql/20_tbs_details.sql
+++ b/sql/20_tbs_details.sql
@@ -37,10 +37,10 @@ COL TAILLE_OCCUPEE_MIB FORMAT 99999990.00 HEAD "Espace occupé MiB"
 -- ORDER BY TABLESPACE_NAME;-- 
 
 COL TABLESPACE_NAME FORMAT A20 HEAD "Tablespace"
-COL Allocated FORMAT 99999999.00 HEAD "Allocated MB"
-COL Used FORMAT 99999999.00 HEAD "Used MB"
-COL Free FORMAT 99999999.00 HEAD "Freed MB"
-COL Max FORMAT 99999999.00 HEAD "MaxSize MB"
+COL alloc FORMAT 99999999.00 HEAD "Allocated MB"
+COL used FORMAT 99999999.00 HEAD "Used MB"
+COL free FORMAT 99999999.00 HEAD "Freed MB"
+COL max FORMAT 99999999.00 HEAD "MaxSize MB"
 COL Pct_Used FORMAT 999.00 HEAD "% Used"
 
 select