diff --git a/src/main.ts b/src/main.ts
index 455c68a..821c6f7 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -7,7 +7,7 @@ async function run(): Promise<void> {
 
     const labels = core
       .getInput('labels')
-      .split('\n')
+      .split('_')
       .filter(l => l !== '');
     const [owner, repo] = core.getInput('repo').split('/');
     const number =