diff --git a/src/layouter/state_machine/sm_layouter.ts b/src/layouter/state_machine/sm_layouter.ts
index 67c45df..b9b49c5 100644
--- a/src/layouter/state_machine/sm_layouter.ts
+++ b/src/layouter/state_machine/sm_layouter.ts
@@ -353,6 +353,9 @@ export class SMLayouter {
             if (n !== node)
                 exitCandidates.add(n);
         }
+        const loopGuardPostdom = this.iPostDoms.get(node)
+        if (loopGuardPostdom && loopGuardPostdom !== node)
+            exitCandidates.add(loopGuardPostdom);
 
         if (exitCandidates.size < 1) {
             throw new Error('No exit candidates found.');