diff --git a/Include/pystate.h b/Include/pystate.h
index 8508da0..e02df88 100644
--- a/Include/pystate.h
+++ b/Include/pystate.h
@@ -27,6 +27,7 @@
     PyObject *codec_search_path;
     PyObject *codec_search_cache;
     PyObject *codec_error_registry;
+    int codecs_initialized;
 
 #ifdef HAVE_DLOPEN
     int dlopenflags;