diff --git a/htdocs/install/mysql/data/llx_c_units.sql b/htdocs/install/mysql/data/llx_c_units.sql
index 598c7697bfc..d54901430e8 100644
--- a/htdocs/install/mysql/data/llx_c_units.sql
+++ b/htdocs/install/mysql/data/llx_c_units.sql
@@ -57,6 +57,9 @@ INSERT INTO llx_c_units (code, scale, label, short_label, unit_type, active) VAL
 INSERT INTO llx_c_units (code, scale, label, short_label, unit_type, active) VALUES ('SET', '0','Set','set', 'qty', 1);
 
 INSERT INTO llx_c_units (code, scale, label, short_label, unit_type, active) VALUES ('S',       '0','second','s', 'time', 1);
-INSERT INTO llx_c_units (code, scale, label, short_label, unit_type, active) VALUES ('MI',     '60','minute','m', 'time', 1);
+INSERT INTO llx_c_units (code, scale, label, short_label, unit_type, active) VALUES ('MI',     '60','minute','i', 'time', 1);
 INSERT INTO llx_c_units (code, scale, label, short_label, unit_type, active) VALUES ('H',    '3600','hour','h', 'time', 1);
 INSERT INTO llx_c_units (code, scale, label, short_label, unit_type, active) VALUES ('D','12960000','day','d', 'time', 1);
+INSERT INTO llx_c_units (code, scale, label, short_label, unit_type, active) VALUES ('W',  '604800','week','W', 'time', 1);
+INSERT INTO llx_c_units (code, scale, label, short_label, unit_type, active) VALUES ('MO','2629800','month','m', 'time', 1);
+INSERT INTO llx_c_units (code, scale, label, short_label, unit_type, active) VALUES ('Y','31557600','year','Y', 'time', 1);