diff --git a/src/Composer/Package/Version/VersionParser.php b/src/Composer/Package/Version/VersionParser.php
index 725ee7d7f..54d3ed1a6 100644
--- a/src/Composer/Package/Version/VersionParser.php
+++ b/src/Composer/Package/Version/VersionParser.php
@@ -97,7 +97,7 @@ class VersionParser
             return str_replace('x', '9999999', $version).'-dev';
         }
 
-        throw new \UnexpectedValueException('Invalid branch name '.$branch);
+        throw new \UnexpectedValueException('Invalid branch name '.$name);
     }
 
     /**