diff --git a/installer/data/mysql/kohastructure.sql b/installer/data/mysql/kohastructure.sql
index e65b2af7ca..2b84af62ca 100644
--- a/installer/data/mysql/kohastructure.sql
+++ b/installer/data/mysql/kohastructure.sql
@@ -1417,7 +1417,7 @@ CREATE TABLE `borrower_modifications` (
   `othernames` longtext DEFAULT NULL,
   `initials` mediumtext DEFAULT NULL,
   `pronouns` longtext DEFAULT NULL,
-  `streetnumber` tinytext DEFAULT NULL,
+  `streetnumber` tinytext DEFAULT NULL COMMENT 'the house number for your patron/borrower''s primary address',
   `streettype` varchar(50) DEFAULT NULL,
   `address` longtext DEFAULT NULL,
   `address2` mediumtext DEFAULT NULL,
@@ -1431,7 +1431,7 @@ CREATE TABLE `borrower_modifications` (
   `fax` longtext DEFAULT NULL,
   `emailpro` mediumtext DEFAULT NULL,
   `phonepro` mediumtext DEFAULT NULL,
-  `B_streetnumber` tinytext DEFAULT NULL,
+  `B_streetnumber` tinytext DEFAULT NULL COMMENT 'the house number for your patron/borrower''s alternate address',
   `B_streettype` varchar(50) DEFAULT NULL,
   `B_address` varchar(100) DEFAULT NULL,
   `B_address2` mediumtext DEFAULT NULL,