diff --git a/lib/SimpleSAML/Error/CriticalConfigurationError.php b/lib/SimpleSAML/Error/CriticalConfigurationError.php
index 98293061e4e205a58cc707a24654a113d0942891..ae01baf0de08eb5ed55821cc3d91560975ac6347 100644
--- a/lib/SimpleSAML/Error/CriticalConfigurationError.php
+++ b/lib/SimpleSAML/Error/CriticalConfigurationError.php
@@ -70,7 +70,7 @@ class CriticalConfigurationError extends ConfigurationError
      *
      * @return \Exception
      */
-    public static function fromException(\Exception $exception): \Exception
+    public static function fromException(\Exception $exception): Exception
     {
         $reason = null;
         $file = null;