diff --git a/adminer/include/export.inc.php b/adminer/include/export.inc.php
index a1515c97..6f2d68d4 100644
--- a/adminer/include/export.inc.php
+++ b/adminer/include/export.inc.php
@@ -153,6 +153,7 @@ function dump_headers($identifier, $multi_table = false) {
 	if ($_POST["output"] == "file" || $compress) {
 		header("Content-Disposition: attachment; filename=$filename.$ext" . (ereg('[0-9a-z]', $compress) ? ".$compress" : ""));
 	}
+	session_write_close();
 	return $ext;
 }
 
diff --git a/editor/include/export.inc.php b/editor/include/export.inc.php
index 3c92fce9..319410a5 100644
--- a/editor/include/export.inc.php
+++ b/editor/include/export.inc.php
@@ -18,6 +18,7 @@ function dump_headers($identifier) {
 	$ext = "csv";
 	header("Content-Type: text/csv; charset=utf-8");
 	header("Content-Disposition: attachment; filename=$filename.$ext");
+	session_write_close();
 	return $ext;
 }