diff --git a/frontend/src/utils/nodeIcons.ts b/frontend/src/utils/nodeIcons.ts
index 9ec55b0..c781d0a 100644
--- a/frontend/src/utils/nodeIcons.ts
+++ b/frontend/src/utils/nodeIcons.ts
@@ -218,6 +218,6 @@ export function resolveCustomIcon(customIconKey?: string): ResolvedIcon | null {
     const slug = brandIconSlug(customIconKey)
     return { kind: 'brand', slug, url: brandIconUrl(slug) }
   }
-  const icon = ICON_MAP[customIconKey]
+  const icon = ICON_MAP[customIconKey] as LucideIcon | undefined
   return icon ? { kind: 'lucide', icon } : null
 }