diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 064caeb..3c06997 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -7792,6 +7792,8 @@
     bloom_linebreak = make_bloom_mask(
         linebreak, sizeof(linebreak) / sizeof(linebreak[0])
         );
+
+    PyType_Ready(&EncodingMapType);
 }
 
 /* Finalize the Unicode implementation */