diff --git a/spacy/structs.pxd b/spacy/structs.pxd
index b33b24db3..53b384f1f 100644
--- a/spacy/structs.pxd
+++ b/spacy/structs.pxd
@@ -23,6 +23,7 @@ cdef struct LexemeC:
 
     float prob
     float sentiment
+    float l2_norm
 
 
 cdef struct Morphology: