diff --git a/plugins/html-preview/html_preview_plugin/__init__.py b/plugins/html-preview/html_preview_plugin/__init__.py
index e0ffa488d75fa476ee56309f0cca957ed35c3391..4454ccc219b2ff1e1af8ab33c508f2c8057b6412 100644
--- a/plugins/html-preview/html_preview_plugin/__init__.py
+++ b/plugins/html-preview/html_preview_plugin/__init__.py
@@ -24,6 +24,7 @@ from gettext import gettext as _
 import gi
 import os
 
+gi.require_version('Gtk', '3.0')
 gi.require_version('Ide', '1.0')
 gi.require_version('WebKit2', '4.0')