diff --git a/config/db/mysql-create-tables.sql b/config/db/mysql-create-tables.sql
index fbf0708a..ea11938e 100644
--- a/config/db/mysql-create-tables.sql
+++ b/config/db/mysql-create-tables.sql
@@ -7,7 +7,7 @@ CREATE TABLE IF NOT EXISTS user (
   tmpblocktimestamp BIGINT,
   tmpblockattempts integer,
   blocked tinyint(1),
-  notificationtype varchar(10),
+  notificationtype varchar(15),
   notificationaddress varchar(256)
 );
 
diff --git a/config/db/mysql-upgrade-notificationtype.sql b/config/db/mysql-upgrade-notificationtype.sql
new file mode 100644
index 00000000..31c29ea0
--- /dev/null
+++ b/config/db/mysql-upgrade-notificationtype.sql
@@ -0,0 +1,6 @@
+/*
+ Initially, the notificationtype column was created as VARCHAR(10). However,
+ this size is too small to accommodate the value 'APNS_DIRECT'.
+*/
+ALTER TABLE user MODIFY notificationtype VARCHAR (15);
+