diff --git a/apps/files_external/templates/settings.php b/apps/files_external/templates/settings.php
index 86492699fc2..b3b94a1dafd 100644
--- a/apps/files_external/templates/settings.php
+++ b/apps/files_external/templates/settings.php
@@ -155,7 +155,7 @@
 			</tbody>
 		</table>
 		<input type="hidden" name="requesttoken" value="<?php p($_['requesttoken']); ?>">
-		<input type="file" id="rootcert_import" name="rootcert_import" style="width:230px;">
+		<input type="file" id="rootcert_import" name="rootcert_import">
 		<input type="submit" name="cert_import" value="<?php p($l->t('Import Root Certificate')); ?>" />
 </fieldset>
 </form>