diff --git a/src/setup-python.ts b/src/setup-python.ts
index 6b3ae1da..62c76dba 100644
--- a/src/setup-python.ts
+++ b/src/setup-python.ts
@@ -53,8 +53,6 @@ async function run() {
       if (cache && isCacheFeatureAvailable()) {
         await cacheDependencies(cache, pythonVersion);
       }
-    } else {
-      throw new Error("there's empty python-version input");
     }
     const matchersPath = path.join(__dirname, '../..', '.github');
     core.info(`##[add-matcher]${path.join(matchersPath, 'python.json')}`);