diff --git a/packages/nodes-base/nodes/OpenAi/OpenAi.node.ts b/packages/nodes-base/nodes/OpenAi/OpenAi.node.ts
index a936337136e9f..7e57a33db7fd9 100644
--- a/packages/nodes-base/nodes/OpenAi/OpenAi.node.ts
+++ b/packages/nodes-base/nodes/OpenAi/OpenAi.node.ts
@@ -29,7 +29,7 @@ export class OpenAi implements INodeType {
 		requestDefaults: {
 			ignoreHttpStatusErrors: true,
 			baseURL:
-				'={{ $credentials.url?.split("/").slice(0,-1).join("/") || https://api.openai.com }}',
+				'={{ $credentials.url?.split("/").slice(0,-1).join("/") ?? "https://api.openai.com" }}',
 		},
 		properties: [
 			oldVersionNotice,