diff --git a/Doc/c-api/structures.rst b/Doc/c-api/structures.rst
index 75e2383beb2..083c3740531 100644
--- a/Doc/c-api/structures.rst
+++ b/Doc/c-api/structures.rst
@@ -103,7 +103,7 @@ the definition of all other Python objects.
 
 .. c:function:: void Py_SET_SIZE(PyVarObject *o, Py_ssize_t size)
 
-   Set the object *o* size of *size*.
+   Set the object *o* size to *size*.
 
    .. versionadded:: 3.9
 
diff --git a/Include/object.h b/Include/object.h
index 68200f7666f..11539ee0805 100644
--- a/Include/object.h
+++ b/Include/object.h
@@ -133,10 +133,10 @@ static inline void _Py_SET_TYPE(PyObject *ob, PyTypeObject *type) {
 }
 #define Py_SET_TYPE(ob, type) _Py_SET_TYPE(_PyObject_CAST(ob), type)
 
-static inline void _Py_SET_SIZE(PyVarObject *ob, Py_ssize_t refcnt) {
-    ob->ob_size = refcnt;
+static inline void _Py_SET_SIZE(PyVarObject *ob, Py_ssize_t size) {
+    ob->ob_size = size;
 }
-#define Py_SET_SIZE(ob, refcnt) _Py_SET_SIZE(_PyVarObject_CAST(ob), refcnt)
+#define Py_SET_SIZE(ob, size) _Py_SET_SIZE(_PyVarObject_CAST(ob), size)
 
 
 /*