diff --git a/src/sample.py b/src/sample.py
index fd8504800..5d04e803f 100755
--- a/src/sample.py
+++ b/src/sample.py
@@ -2,6 +2,8 @@
 
 import sys
 import array
+import gi
+gi.require_version('HarfBuzz', '0.0')
 from gi.repository import HarfBuzz as hb
 from gi.repository import GLib