diff --git a/src/lib/litegraph/src/LLink.ts b/src/lib/litegraph/src/LLink.ts
index 58ae4e090..71b41f23d 100644
--- a/src/lib/litegraph/src/LLink.ts
+++ b/src/lib/litegraph/src/LLink.ts
@@ -205,7 +205,7 @@ export class LLink implements LinkSegment, Serialisable<SerialisableLLink> {
     network: Pick<ReadonlyLinkNetwork, 'reroutes'>,
     linkSegment: LinkSegment
   ): Reroute[] {
-    if (!linkSegment.parentId) return []
+    if (linkSegment.parentId === undefined) return []
     return network.reroutes.get(linkSegment.parentId)?.getReroutes() ?? []
   }
 
@@ -229,7 +229,7 @@ export class LLink implements LinkSegment, Serialisable<SerialisableLLink> {
     linkSegment: LinkSegment,
     rerouteId: RerouteId
   ): Reroute | null | undefined {
-    if (!linkSegment.parentId) return
+    if (linkSegment.parentId === undefined) return
     return network.reroutes
       .get(linkSegment.parentId)
       ?.findNextReroute(rerouteId)
@@ -498,7 +498,7 @@ export class LLink implements LinkSegment, Serialisable<SerialisableLLink> {
       target_slot: this.target_slot,
       type: this.type
     }
-    if (this.parentId) copy.parentId = this.parentId
+    if (this.parentId !== undefined) copy.parentId = this.parentId
     return copy
   }
 }