diff --git a/mysql/migration/1.1.0-2.0.0.sql b/mysql/migration/1.1.0-2.0.0.sql
index 354215b1b1d..97c018e6730 100644
--- a/mysql/migration/1.1.0-2.0.0.sql
+++ b/mysql/migration/1.1.0-2.0.0.sql
@@ -1746,7 +1746,7 @@ create table llx_projet_task_time
   rowid            integer AUTO_INCREMENT PRIMARY KEY,
   fk_task          integer  NOT NULL,
   task_date        date,
-  task_duration    smallint UNSIGNED,
+  task_duration    real UNSIGNED,
   fk_user          integer,
   note             text,