diff --git a/schema/mysql-changes/upgrade_32.sql b/schema/mysql-changes/upgrade_32.sql
new file mode 100644
index 00000000..4d584ded
--- /dev/null
+++ b/schema/mysql-changes/upgrade_32.sql
@@ -0,0 +1 @@
+ALTER TABLE import_source_setting MODIFY setting_value TEXT DEFAULT NULL;
diff --git a/schema/mysql.sql b/schema/mysql.sql
index 0029b557..f125878a 100644
--- a/schema/mysql.sql
+++ b/schema/mysql.sql
@@ -814,7 +814,7 @@ CREATE TABLE import_source (
 CREATE TABLE import_source_setting (
   source_id INT(10) UNSIGNED NOT NULL,
   setting_name VARCHAR(64) NOT NULL,
-  setting_value VARCHAR(255) NOT NULL,
+  setting_value TEXT NOT NULL,
   PRIMARY KEY (source_id, setting_name),
   CONSTRAINT import_source_settings_source
     FOREIGN KEY source (source_id)