diff --git a/index.js b/index.js
index 8537b789..80c6d168 100644
--- a/index.js
+++ b/index.js
@@ -66,12 +66,17 @@ async function publish(pluginConfig, context) {
     } catch (error) {
       debug(stdout);
       debug(error);
+
       context.logger.log(
         `The command ${pluginConfig.publishCmd ||
           pluginConfig.cmd} wrote invalid JSON to stdout. The stdout content will be ignored.`
       );
     }
+
+    return undefined;
   }
+
+  return false;
 }
 
 async function success(pluginConfig, context) {
diff --git a/test/publish.test.js b/test/publish.test.js
index f1873efc..590cb33a 100644
--- a/test/publish.test.js
+++ b/test/publish.test.js
@@ -76,3 +76,11 @@ test('Use "publishCmd" even if "cmd" is defined', async t => {
   const result = await publish(pluginConfig, context);
   t.deepEqual(result, {name: 'Release name', url: 'https://host.com/release/1.0.0'});
 });
+
+test('Return "false" if neither "publishCmd" nor "cmd" is defined', async t => {
+  const pluginConfig = {};
+  const context = {stdout: t.context.stdout, stderr: t.context.stderr, logger: t.context.logger};
+
+  const result = await publish(pluginConfig, context);
+  t.is(result, false);
+});