diff --git a/lib/main.js b/lib/main.js
index 86cee9b..3f2bc9f 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -63,9 +63,10 @@ function run() {
             const tmpdir = fs.mkdtempSync(path.join(os.tmpdir(), 'github-pages-'));
             process.chdir(tmpdir);
             core.info(`🏃 Copying ${path.resolve(build_dir)} contents to ${tmpdir}`);
-            ncp_1.default.ncp(path.resolve(build_dir), tmpdir, {}, err => {
-                core.setFailed(`⛔️ Failed to copy ${path.resolve(build_dir)}`);
-                return;
+            ncp_1.default.ncp(path.resolve(build_dir), tmpdir, err => {
+                if (err !== null) {
+                    core.setFailed(`⛔️ Failed to copy ${path.resolve(build_dir)}`);
+                }
             });
             const remote_branch_exists = child_process.execSync(`git ls-remote --heads ${remote_url} ${target_branch}`, { encoding: 'utf8' }).trim().length >
                 0;
diff --git a/src/main.ts b/src/main.ts
index 91f6398..e6d685b 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -45,9 +45,10 @@ async function run() {
     process.chdir(tmpdir);
 
     core.info(`🏃 Copying ${path.resolve(build_dir)} contents to ${tmpdir}`);
-    ncp.ncp(path.resolve(build_dir), tmpdir, {}, err => {
-      core.setFailed(`⛔️ Failed to copy ${path.resolve(build_dir)}`);
-      return;
+    ncp.ncp(path.resolve(build_dir), tmpdir, err => {
+      if (err !== null) {
+        core.setFailed(`⛔️ Failed to copy ${path.resolve(build_dir)}`);
+      }
     });
 
     const remote_branch_exists =