diff --git a/cli/src/services/hook-runner.ts b/cli/src/services/hook-runner.ts
index 0a9fb454..db72a5c9 100644
--- a/cli/src/services/hook-runner.ts
+++ b/cli/src/services/hook-runner.ts
@@ -31,7 +31,7 @@ export default class HookRunner {
           const output = execSync(hook, {stdio: 'pipe'}).toString();
           if (output.length > 0) formatter.success(hook, output);
         } catch (error: any) {
-          const output = error.stderr.toString();
+          const output: string[] = [error.stderr.toString()];
 
           if (output.length > 0) {
             formatter.error(hook, output);