diff --git a/src/Index/Index.php b/src/Index/Index.php
index c72e3e3..39e8d70 100644
--- a/src/Index/Index.php
+++ b/src/Index/Index.php
@@ -187,9 +187,6 @@ class Index implements ReadableIndex, \Serializable
     public function removeDefinition(string $fqn)
     {
         $parts = $this->splitFqn($fqn);
-        if (empty($parts)) {
-            throw new \Exception($fqn);
-        }
         $this->removeIndexedDefinition(0, $parts, $this->definitions, $this->definitions);
 
         unset($this->references[$fqn]);