diff --git a/sql/table.sql b/sql/table.sql
index e2320d453617249c32637d041ad17e9c3640ec72..9a300e1abbefdd013aabbd5f19819fab3fe4b18a 100755
--- a/sql/table.sql
+++ b/sql/table.sql
@@ -426,7 +426,7 @@ CREATE TABLE translation_stable_id (
  
 
 CREATE TABLE assembly (
-    chromosome_id  tinyint unsigned  NOT NULL,
+    chromosome_id  int unsigned  NOT NULL,
     chr_start      int(10) NOT NULL,
     chr_end        int(10) NOT NULL,
     superctg_name    varchar(20) NOT NULL,