diff --git a/lib/Alchemy/Phrasea/Border/File.php b/lib/Alchemy/Phrasea/Border/File.php
index f05e62a7e7..fab6ff7fd2 100644
--- a/lib/Alchemy/Phrasea/Border/File.php
+++ b/lib/Alchemy/Phrasea/Border/File.php
@@ -143,6 +143,7 @@ class File
              * PHPExiftool throws exception on some files not supported
              */
             try {
+                $this->app['exiftool.writer']->reset();
                 $this->app['exiftool.writer']->write($this->getFile()->getRealPath(), $metadatas);
             } catch (PHPExiftoolException $e) {
 
diff --git a/lib/classes/task/period/writemeta.php b/lib/classes/task/period/writemeta.php
index 14f5e21f98..159e25fe3a 100644
--- a/lib/classes/task/period/writemeta.php
+++ b/lib/classes/task/period/writemeta.php
@@ -303,9 +303,10 @@ class task_period_writemeta extends task_databoxAbstract
             );
         }
 
+        $this->dependencyContainer['exiftool.writer']->reset();
         foreach ($tsub as $name => $file) {
 
-            $this->dependencyContainer['exiftool.writer']->erase($name != 'document' || $this->clear_doc);
+            $this->dependencyContainer['exiftool.writer']->erase($name != 'document' || $this->clear_doc, true);
 
             try {
                 $this->dependencyContainer['exiftool.writer']->write($file, $metadatas);