diff --git a/views/bootstrap/class.Bootstrap.php b/views/bootstrap/class.Bootstrap.php
index cd53d09f2..d31f00041 100644
--- a/views/bootstrap/class.Bootstrap.php
+++ b/views/bootstrap/class.Bootstrap.php
@@ -1403,9 +1403,10 @@ background-image: linear-gradient(to bottom, #882222, #111111);;
 			$attrs[] = array('href', $config['remote']);
 		$attrs[] = array('data-toggle', 'modal');
 		$attrs[] = array('role', 'button');
-		if(isset($config['class']))
-			$attrs[] = array('class', $config['class']);
-		else
+		if(isset($config['class'])) {
+			if($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 f97a47d9f..590a25e20 100644
--- a/views/bootstrap4/class.Bootstrap4.php
+++ b/views/bootstrap4/class.Bootstrap4.php
@@ -1324,9 +1324,10 @@ background-image: linear-gradient(to bottom, #882222, #111111);;
 			$attrs[] = array('href', $config['remote']);
 		$attrs[] = array('data-toggle', 'modal');
 		$attrs[] = array('role', 'button');
-		if(isset($config['class']))
-			$attrs[] = array('class', $config['class']);
-		else
+		if(isset($config['class'])) {
+			if($config['class'])
+				$attrs[] = array('class', $config['class']);
+		} else
 			$attrs[] = array('class', 'btn');
 		return $attrs;
 	} /* }}} */