diff --git a/dist/index.js b/dist/index.js
index be71c59..4fb758e 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -3878,9 +3878,9 @@ function run() {
             yield installer.getJava(version, arch, jdkFile, javaPackage);
             const matchersPath = path.join(__dirname, '..', '.github');
             console.log(`##[add-matcher]${path.join(matchersPath, 'java.json')}`);
-            const id = core.getInput('server-id', { required: false });
-            const username = core.getInput('server-username', { required: false });
-            const password = core.getInput('server-password', { required: false });
+            const id = core.getInput('server-id', { required: false }) || undefined;
+            const username = core.getInput('server-username', { required: false }) || undefined;
+            const password = core.getInput('server-password', { required: false }) || undefined;
             yield auth.configAuthentication(id, username, password);
         }
         catch (error) {
diff --git a/src/setup-java.ts b/src/setup-java.ts
index a50ff55..7614f03 100644
--- a/src/setup-java.ts
+++ b/src/setup-java.ts
@@ -18,9 +18,9 @@ async function run() {
     const matchersPath = path.join(__dirname, '..', '.github');
     console.log(`##[add-matcher]${path.join(matchersPath, 'java.json')}`);
 
-    const id = core.getInput('server-id', {required: false});
-    const username = core.getInput('server-username', {required: false});
-    const password = core.getInput('server-password', {required: false});
+    const id = core.getInput('server-id', {required: false}) || undefined;
+    const username = core.getInput('server-username', {required: false}) || undefined;
+    const password = core.getInput('server-password', {required: false}) || undefined;
 
     await auth.configAuthentication(id, username, password);
   } catch (error) {