diff --git a/.changeset/chilly-gorillas-teach.md b/.changeset/chilly-gorillas-teach.md
new file mode 100644
index 000000000..699ad36a8
--- /dev/null
+++ b/.changeset/chilly-gorillas-teach.md
@@ -0,0 +1,5 @@
+---
+"@hey-api/openapi-ts": patch
+---
+
+fix: use optional chaining in bin catch block
diff --git a/packages/openapi-ts/bin/index.cjs b/packages/openapi-ts/bin/index.cjs
index 66883eecf..f654ad3bc 100755
--- a/packages/openapi-ts/bin/index.cjs
+++ b/packages/openapi-ts/bin/index.cjs
@@ -81,7 +81,7 @@ async function start() {
     await createClient(userConfig);
     process.exit(0);
   } catch (error) {
-    if (!userConfig.dryRun) {
+    if (!userConfig?.dryRun) {
       const logName = `openapi-ts-error-${Date.now()}.log`;
       const logPath = resolve(process.cwd(), logName);
       writeFileSync(logPath, `${error.message}\n${error.stack}`);