diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..6a1204f
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,13 @@
+# Changelog #
+
+This project uses [semantic versioning](https://semver.org).
+
+## Version 1
+
+### 1.0.0
+
+- Initial release
+
+### 1.0.1
+
+- Correctly return error description ([PR #2](https://github.com/smolblog/oauth2-twitter/pull/2))
diff --git a/README.md b/README.md
index e399cc5..59b657e 100644
--- a/README.md
+++ b/README.md
@@ -81,8 +81,8 @@ if (!isset($_GET['code'])) {
 
 		// Try to get an access token (using the authorization code grant)
 		$token = $provider->getAccessToken('authorization_code', [
-				'code' => $_GET['code'],
-				'code_verifier' => $_SESSION['oauth2verifier'],
+			'code' => $_GET['code'],
+			'code_verifier' => $_SESSION['oauth2verifier'],
 		]);
 
 		// Optional: Now you have a token you can look up a users profile data
@@ -97,8 +97,8 @@ if (!isset($_GET['code'])) {
 		print_r($e);
 		echo '</pre>';
 
-			// Failed to get user details
-			exit('Oh dear...');
+		// Failed to get user details
+		exit('Oh dear...');
 	}
 
 	// Use this to interact with an API on the users behalf
@@ -106,6 +106,10 @@ if (!isset($_GET['code'])) {
 }
 ```
 
+## Changelog
+
+See `CHANGELOG.md`
+
 ## Credits
 
 - [Evan Hildreth](https://github.com/oddevan)
diff --git a/src/Twitter.php b/src/Twitter.php
index 0ee7380..aa6a7e5 100644
--- a/src/Twitter.php
+++ b/src/Twitter.php
@@ -158,7 +158,7 @@ protected function checkResponse(ResponseInterface $response, $data): void
             return;
         }
 
-        $error = $data['description'] ?? '';
+        $error = $data['error_description'] ?? '';
         $code = $data['code'] ?? $response->getStatusCode();
 
         throw new IdentityProviderException($error, $code, $data);