diff --git a/doc/README.Install.md b/doc/README.Install.md
index 083b02117..42541f21e 100644
--- a/doc/README.Install.md
+++ b/doc/README.Install.md
@@ -69,7 +69,7 @@ set an alias like described above).
 
 It will first ask to unlock the installer by creating a file
 `ENABLE_INSTALL_TOOL` in the diretory `seeddms51x/conf/`. Change all paths by
-replacing `/home/wwww-data` with your base directory where you put seeddms51x.
+replacing `/home/www-data` with your base directory where you put seeddms51x.
 Set httpRoot to '/' (if  the document root points to`seeddms51x/www`) or
 '/seeddms51x' (if you have set an alias like described above).
 
diff --git a/views/bootstrap/class.Bootstrap.php b/views/bootstrap/class.Bootstrap.php
index 03c46f58c..f7d2d56e8 100644
--- a/views/bootstrap/class.Bootstrap.php
+++ b/views/bootstrap/class.Bootstrap.php
@@ -1392,6 +1392,8 @@ background-image: linear-gradient(to bottom, #882222, #111111);;
 		$attrs[] = array('role', 'button');
 		if(isset($config['class']))
 			$attrs[] = array('class', $config['class']);
+		else
+			$attrs[] = array('class', 'btn');
 		return $attrs;
 	} /* }}} */
 
diff --git a/views/bootstrap4/class.Bootstrap4.php b/views/bootstrap4/class.Bootstrap4.php
index ce701f291..df87c5a53 100644
--- a/views/bootstrap4/class.Bootstrap4.php
+++ b/views/bootstrap4/class.Bootstrap4.php
@@ -1310,6 +1310,8 @@ background-image: linear-gradient(to bottom, #882222, #111111);;
 		$attrs[] = array('role', 'button');
 		if(isset($config['class']))
 			$attrs[] = array('class', $config['class']);
+		else
+			$attrs[] = array('class', 'btn');
 		return $attrs;
 	} /* }}} */