diff --git a/kalpy/fstext/lexicon.py b/kalpy/fstext/lexicon.py
index c83f185..95e80d9 100644
--- a/kalpy/fstext/lexicon.py
+++ b/kalpy/fstext/lexicon.py
@@ -16,6 +16,8 @@
 from kalpy.exceptions import LexiconError, PhonesToPronunciationsError
 from kalpy.gmm.data import CtmInterval, HierarchicalCtm, WordCtmInterval
 
+G2PCompiler = None
+
 
 @dataclass
 class Pronunciation: