diff --git a/spacy/_ml.py b/spacy/_ml.py
index 3b96a69b5..dc458d6ac 100644
--- a/spacy/_ml.py
+++ b/spacy/_ml.py
@@ -31,8 +31,8 @@ import numpy
 import io
 
 # TODO: Unset this once we don't want to support models previous models.
-import thinc.neural._classes.layernorm
-thinc.neural._classes.layernorm.set_compat_six_eight(True)
+#import thinc.neural._classes.layernorm
+#thinc.neural._classes.layernorm.set_compat_six_eight(True)
 
 VECTORS_KEY = 'spacy_pretrained_vectors'