diff --git a/wp-includes/capabilities.php b/wp-includes/capabilities.php
index af5fb5879d..6bcb0c6e81 100644
--- a/wp-includes/capabilities.php
+++ b/wp-includes/capabilities.php
@@ -62,9 +62,9 @@ class WP_Roles {
 		return $this->role_names;
 	}
 
-	function is_role($caps)
+	function is_role($role)
 	{
-		return empty($this->role_names[$cap]);
+		return empty($this->role_names[$role]);
 	}	
 }
 
diff --git a/wp-includes/pluggable-functions.php b/wp-includes/pluggable-functions.php
index 5ca232800d..c32f8523a2 100644
--- a/wp-includes/pluggable-functions.php
+++ b/wp-includes/pluggable-functions.php
@@ -52,7 +52,7 @@ function get_userdata( $user_id ) {
 	}
 
 	$cache_userdata[$user_id] = $user;
-	$cache_userdata[$cache_userdata[$userid]->user_login] =& $cache_userdata[$user_id];
+	$cache_userdata[$cache_userdata[$user_id]->user_login] =& $cache_userdata[$user_id];
 
 	return $cache_userdata[$user_id];
 }