diff --git a/htdocs/install/mysql/migration/15.0.0-16.0.0.sql b/htdocs/install/mysql/migration/15.0.0-16.0.0.sql
index 7aa4ff82e4b..634e17b33b4 100644
--- a/htdocs/install/mysql/migration/15.0.0-16.0.0.sql
+++ b/htdocs/install/mysql/migration/15.0.0-16.0.0.sql
@@ -312,3 +312,6 @@ UPDATE llx_c_availability SET type_duration = 'w', qty = 4 WHERE code = 'AV_4W';
 ALTER TABLE llx_boxes_def ADD COLUMN fk_user integer DEFAULT 0 NOT NULL;
 
 ALTER TABLE llx_contratdet ADD COLUMN rang integer DEFAULT 0 AFTER info_bits;
+
+ALTER TABLE llx_actioncomm MODIFY COLUMN note mediumtext;
+
diff --git a/htdocs/install/mysql/tables/llx_actioncomm.sql b/htdocs/install/mysql/tables/llx_actioncomm.sql
index 2f3f7660698..d4d0b65ef25 100644
--- a/htdocs/install/mysql/tables/llx_actioncomm.sql
+++ b/htdocs/install/mysql/tables/llx_actioncomm.sql
@@ -55,7 +55,7 @@ create table llx_actioncomm
   durationp			real,							-- planed duration
 
   label				varchar(255) NOT NULL,			-- label/title of event or topic of email
-  note				text,							-- private note of event or content of email
+  note				mediumtext,						-- private note of event or content of email
   
   calling_duration  integer,                        -- when event is a phone call, duration of phone call