manager: automatically GC unreferenced units
diff --git a/load-fragment.c b/load-fragment.c
index f79af63..03205f1 100644
--- a/load-fragment.c
+++ b/load-fragment.c
@@ -97,7 +97,7 @@
                 if (!k)
                         return -ENOMEM;
 
-                r = unit_add_dependency_by_name(u, d, k, NULL);
+                r = unit_add_dependency_by_name(u, d, k, NULL, true);
                 free(k);
 
                 if (r < 0)