diff --git a/src/cli.ts b/src/cli.ts
index d848e56d..91e08751 100644
--- a/src/cli.ts
+++ b/src/cli.ts
@@ -82,7 +82,7 @@ commander
       // tslint:disable-next-line:no-magic-numbers
       writeFileSync(errPath, JSON.stringify(result.errors, null, 2));
       Logger.ok(`Mapping errors written to ${errPath}.`);
-    } else {
+    } else if (result.errors.length > 0) {
       for (const error of result.errors) {
         await Logger.error(error);
       }