diff --git a/docs/conversion/sakai_26_mysql_conversion.sql b/docs/conversion/sakai_26_mysql_conversion.sql
index d2720c61ea..1286499ec3 100644
--- a/docs/conversion/sakai_26_mysql_conversion.sql
+++ b/docs/conversion/sakai_26_mysql_conversion.sql
@@ -25,3 +25,7 @@ ALTER TABLE PROFILE_IMAGES_T DROP INDEX PROFILE_IMAGES_USER_UUID_I;
 -- START SAK-49440
 ALTER TABLE mfr_permission_level_t CHANGE COLUMN MARK_AS_READ MARK_AS_NOT_READ bit(1) NOT NULL;
 -- END SAK-49440
+
+-- START SAK-52355
+ALTER TABLE MC_SITE_SYNCHRONIZATION ADD DISABLED BIT DEFAULT b'0' NOT NULL;
+-- END SAK-52355
diff --git a/docs/conversion/sakai_26_oracle_conversion.sql b/docs/conversion/sakai_26_oracle_conversion.sql
index e3a7e7524f..277502a644 100644
--- a/docs/conversion/sakai_26_oracle_conversion.sql
+++ b/docs/conversion/sakai_26_oracle_conversion.sql
@@ -32,3 +32,7 @@ DROP INDEX PROFILE_IMAGES_USER_UUID_I;
 -- START SAK-49440
 ALTER TABLE mfr_permission_level_t RENAME COLUMN MARK_AS_READ TO MARK_AS_NOT_READ;
 -- END SAK-49440
+
+-- START SAK-52355
+ALTER TABLE MC_SITE_SYNCHRONIZATION ADD DISABLED NUMBER(1,0) DEFAULT 0 NOT NULL;
+-- END SAK-52355