diff --git a/library/Businessprocess/Storage/LegacyStorage.php b/library/Businessprocess/Storage/LegacyStorage.php
index 288537b..fc2bf18 100644
--- a/library/Businessprocess/Storage/LegacyStorage.php
+++ b/library/Businessprocess/Storage/LegacyStorage.php
@@ -159,6 +159,8 @@ class LegacyStorage extends Storage
                 }
             }
         }
+
+        fclose($fh);
         return $header;
     }