diff --git a/Tools/ttx b/Tools/ttx
index 9b2a6cc94..00c78830f 100755
--- a/Tools/ttx
+++ b/Tools/ttx
@@ -1,6 +1,10 @@
 #! /usr/bin/env python
 
 
+def _dummy():
+	from encodings import latin_1, utf_8, utf_16_be
+
+
 import sys
 from fontTools import ttx