diff --git a/schema/mysql-changes/upgrade_60.sql b/schema/mysql-changes/upgrade_60.sql
new file mode 100644
index 00000000..5b0da8f0
--- /dev/null
+++ b/schema/mysql-changes/upgrade_60.sql
@@ -0,0 +1,2 @@
+ALTER TABLE icinga_service MODIFY COLUMN use_agent ENUM('y', 'n') DEFAULT NULL;
+
diff --git a/schema/mysql.sql b/schema/mysql.sql
index 99fcc29c..ca48791b 100644
--- a/schema/mysql.sql
+++ b/schema/mysql.sql
@@ -508,7 +508,7 @@ CREATE TABLE icinga_service (
   icon_image VARCHAR(255) DEFAULT NULL,
   icon_image_alt VARCHAR(255) DEFAULT NULL,
   object_type ENUM('object', 'template', 'apply') NOT NULL,
-  use_agent ENUM('y', 'n') NOT NULL DEFAULT 'n',
+  use_agent ENUM('y', 'n') DEFAULT NULL,
   PRIMARY KEY (id),
   -- UNIQUE INDEX object_name (object_name, zone_id),
   UNIQUE KEY object_key (object_name, host_id),