diff --git a/spacy/attrs.pyx b/spacy/attrs.pyx
index 8d76160f4..3595fbf22 100644
--- a/spacy/attrs.pyx
+++ b/spacy/attrs.pyx
@@ -1,5 +1,5 @@
 IDS = {
-    "NULL_ATTR": NULL_ATTR,
+    "": NULL_ATTR,
     "IS_ALPHA": IS_ALPHA,
     "IS_ASCII": IS_ASCII,
     "IS_DIGIT": IS_DIGIT,