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-rw-r--r--gnu/services/shepherd.scm4
1 files changed, 3 insertions, 1 deletions
diff --git a/gnu/services/shepherd.scm b/gnu/services/shepherd.scm
index 19a052c89b..7277273686 100644
--- a/gnu/services/shepherd.scm
+++ b/gnu/services/shepherd.scm
@@ -73,7 +73,9 @@
             shepherd-service-back-edges
             shepherd-service-upgrade
 
-            user-processes-service-type))
+            user-processes-service-type
+
+            assert-valid-graph))
 
 ;;; Commentary:
 ;;;