diff --git a/dist/setup/index.js b/dist/setup/index.js
index 5551ef81..c699e65d 100644
--- a/dist/setup/index.js
+++ b/dist/setup/index.js
@@ -52266,7 +52266,9 @@ const utils_1 = __webpack_require__(163);
 const TOKEN = core.getInput('token');
 const GHES_TOKEN = core.getInput('ghes_token');
 const AUTH = utils_1.isGhes()
-    ? `token ${GHES_TOKEN}`
+    ? GHES_TOKEN
+        ? `token ${GHES_TOKEN}`
+        : undefined
     : TOKEN
         ? `token ${TOKEN}`
         : undefined;
diff --git a/src/install-python.ts b/src/install-python.ts
index 7aee61d5..44e9fa3b 100644
--- a/src/install-python.ts
+++ b/src/install-python.ts
@@ -8,7 +8,9 @@ import {IS_WINDOWS, IS_LINUX, isGhes} from './utils';
 const TOKEN = core.getInput('token');
 const GHES_TOKEN = core.getInput('ghes_token');
 const AUTH = isGhes()
-  ? `token ${GHES_TOKEN}`
+  ? GHES_TOKEN
+    ? `token ${GHES_TOKEN}`
+    : undefined
   : TOKEN
   ? `token ${TOKEN}`
   : undefined;