diff --git a/Lib/fontTools/fontBuilder.py b/Lib/fontTools/fontBuilder.py
index 3af4344b7..89ab8c416 100644
--- a/Lib/fontTools/fontBuilder.py
+++ b/Lib/fontTools/fontBuilder.py
@@ -1,6 +1,8 @@
 from __future__ import print_function, division, absolute_import
 from __future__ import unicode_literals
 
+__all__ = ["FontBuilder"]
+
 """
 The `FontBuilder` class is a convenient helper to construct working TTF or OTF
 fonts from scratch.