diff --git a/public/assets/sql/tabNaf.sql b/public/assets/sql/tabNaf.sql
index d2f49ec7..468e8afc 100644
--- a/public/assets/sql/tabNaf.sql
+++ b/public/assets/sql/tabNaf.sql
@@ -1,5 +1,3 @@
-SELECT codNaf5 AS codNaf, libNaf5 AS libNaf
-FROM jo.tabNaf5
-UNION SELECT codNaf700 AS codNaf, libNaf700 AS libNaf
-FROM jo.tabNaf4
-ORDER BY codNaf
\ No newline at end of file
+SELECT codNaf5 AS codNaf, libNaf5 AS libNaf FROM jo.tabNaf5 WHERE  LENGTH(codNaf5)=5
+UNION
+SELECT codNaf700 AS codNaf, libNaf700 AS libNaf FROM jo.tabNaf4 WHERE libNaf700!='' ORDER BY codNaf;
\ No newline at end of file