diff --git a/spacy/strings.pyx b/spacy/strings.pyx
index c5f218342..a9768dfdf 100644
--- a/spacy/strings.pyx
+++ b/spacy/strings.pyx
@@ -112,7 +112,7 @@ cdef class StringStore:
 
     DOCS: https://spacy.io/api/stringstore
     """
-    def __init__(self, strings=None, freeze=False):
+    def __init__(self, strings=None):
         """Create the StringStore.
 
         strings (iterable): A sequence of unicode strings to add to the store.