diff --git a/Include/compile.h b/Include/compile.h
index 5ce5b77..bc53b39 100644
--- a/Include/compile.h
+++ b/Include/compile.h
@@ -31,7 +31,7 @@
 struct _mod; /* Declare the existence of this type */
 #define PyAST_Compile(mod, s, f, ar) PyAST_CompileEx(mod, s, f, -1, ar)
 PyAPI_FUNC(PyCodeObject *) PyAST_CompileEx(
-    mod_ty mod,
+    struct _mod *mod,
     const char *filename,       /* decoded from the filesystem encoding */
     PyCompilerFlags *flags,
     int optimize,