diff --git a/lib/main.js b/lib/main.js
index 69f5713d..bc8d0c67 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -23,7 +23,7 @@ function run() {
             const context = github.context;
             const defaultUrl = `https://github.com/${context.repo.owner}/${context.repo.repo}/commit/${context.sha}/checks`;
             const token = core.getInput("token", { required: true });
-            const url = core.getInput("target-url", { required: false }) || defaultUrl;
+            const url = core.getInput("target_url", { required: false }) || defaultUrl;
             const environment = core.getInput("environment", { required: false }) || "production";
             const description = core.getInput("description", { required: false });
             const initialStatus = core.getInput("initial_status", {