diff --git a/Doc/api/newtypes.tex b/Doc/api/newtypes.tex
index a95f836..bfce26c 100644
--- a/Doc/api/newtypes.tex
+++ b/Doc/api/newtypes.tex
@@ -188,7 +188,7 @@
   instance.  This macro always expands to:
   \begin{verbatim}
     PyObject_HEAD
-    int ob_size;
+    Py_ssize_t ob_size;
   \end{verbatim}
   Note that \csimplemacro{PyObject_HEAD} is part of the expansion, and
   that its own expansion varies depending on the definition of
diff --git a/Modules/arraymodule.c b/Modules/arraymodule.c
index dffb2e7..4152bad 100644
--- a/Modules/arraymodule.c
+++ b/Modules/arraymodule.c
@@ -29,8 +29,7 @@
 };
 
 typedef struct arrayobject {
-	PyObject_HEAD
-	Py_ssize_t ob_size;
+	PyObject_VAR_HEAD
 	char *ob_item;
 	Py_ssize_t allocated;
 	struct arraydescr *ob_descr;