diff --git a/migration/migration.c b/migration/migration.c
index 82fbe0cf55..bb8bbddfe4 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -2617,6 +2617,7 @@ MultiFDCompression migrate_multifd_compression(void)
 
     s = migrate_get_current();
 
+    assert(s->parameters.multifd_compression < MULTIFD_COMPRESSION__MAX);
     return s->parameters.multifd_compression;
 }