diff --git a/ui/src/pages/ExchangeDetail/ExchangeDetail.tsx b/ui/src/pages/ExchangeDetail/ExchangeDetail.tsx
index 81cc7404..1078d8ad 100644
--- a/ui/src/pages/ExchangeDetail/ExchangeDetail.tsx
+++ b/ui/src/pages/ExchangeDetail/ExchangeDetail.tsx
@@ -157,7 +157,7 @@ export default function ExchangeDetail() {
     const lookup = new Map(flatProcs
       .filter(p => p.diagramNodeId && p.processorId)
       .map(p => [p.diagramNodeId!, p.processorId!]))
-    return diagram.nodes.map(node => lookup.get(node.id ?? '') ?? '')
+    return diagram.nodes.map(node => lookup.get(node.id ?? '') ?? node.id ?? '')
   }, [diagram, procList, processorIds])
 
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