diff --git a/migration/migration.h b/migration/migration.h
index cf2c9c88e0..b3c9288c38 100644
--- a/migration/migration.h
+++ b/migration/migration.h
@@ -480,8 +480,6 @@ void migration_incoming_process(void);
 
 bool  migration_has_all_channels(void);
 
-uint64_t migrate_max_downtime(void);
-
 void migrate_set_error(MigrationState *s, const Error *error);
 bool migrate_has_error(MigrationState *s);