diff --git a/Include/cpython/funcobject.h b/Include/cpython/funcobject.h
index 18249b95befe65..598cd330bc9ca9 100644
--- a/Include/cpython/funcobject.h
+++ b/Include/cpython/funcobject.h
@@ -97,11 +97,6 @@ static inline PyObject* PyFunction_GET_GLOBALS(PyObject *func) {
 }
 #define PyFunction_GET_GLOBALS(func) PyFunction_GET_GLOBALS(_PyObject_CAST(func))
 
-static inline PyObject* PyFunction_GET_BUILTINS(PyObject *func) {
-    return _PyFunction_CAST(func)->func_builtins;
-}
-#define PyFunction_GET_BUILTINS(func) PyFunction_GET_BUILTINS(_PyObject_CAST(func))
-
 static inline PyObject* PyFunction_GET_MODULE(PyObject *func) {
     return _PyFunction_CAST(func)->func_module;
 }
diff --git a/Include/internal/pycore_function.h b/Include/internal/pycore_function.h
index a30d52d49bdc4d..6e1209659565a3 100644
--- a/Include/internal/pycore_function.h
+++ b/Include/internal/pycore_function.h
@@ -41,6 +41,11 @@ extern PyObject *_Py_set_function_type_params(
 PyAPI_FUNC(int)
 _PyFunction_VerifyStateless(PyThreadState *, PyObject *);
 
+static inline PyObject* _PyFunction_GET_BUILTINS(PyObject *func) {
+    return _PyFunction_CAST(func)->func_builtins;
+}
+#define _PyFunction_GET_BUILTINS(func) _PyFunction_GET_BUILTINS(_PyObject_CAST(func))
+
 
 #ifdef __cplusplus
 }
diff --git a/Modules/_testinternalcapi.c b/Modules/_testinternalcapi.c
index 804cb4e4d1c8ee..fdf22a0c994d3a 100644
--- a/Modules/_testinternalcapi.c
+++ b/Modules/_testinternalcapi.c
@@ -21,6 +21,7 @@
 #include "pycore_fileutils.h"     // _Py_normpath()
 #include "pycore_flowgraph.h"     // _PyCompile_OptimizeCfg()
 #include "pycore_frame.h"         // _PyInterpreterFrame
+#include "pycore_function.h"      // _PyFunction_GET_BUILTINS
 #include "pycore_gc.h"            // PyGC_Head
 #include "pycore_hashtable.h"     // _Py_hashtable_new()
 #include "pycore_import.h"        // _PyImport_ClearExtension()
@@ -1022,7 +1023,7 @@ get_code_var_counts(PyObject *self, PyObject *_args, PyObject *_kwargs)
             globalsns = PyFunction_GET_GLOBALS(codearg);
         }
         if (builtinsns == NULL) {
-            builtinsns = PyFunction_GET_BUILTINS(codearg);
+            builtinsns = _PyFunction_GET_BUILTINS(codearg);
         }
         codearg = PyFunction_GET_CODE(codearg);
     }
@@ -1190,7 +1191,7 @@ verify_stateless_code(PyObject *self, PyObject *args, PyObject *kwargs)
             globalsns = PyFunction_GET_GLOBALS(codearg);
         }
         if (builtinsns == NULL) {
-            builtinsns = PyFunction_GET_BUILTINS(codearg);
+            builtinsns = _PyFunction_GET_BUILTINS(codearg);
         }
         codearg = PyFunction_GET_CODE(codearg);
     }
diff --git a/Objects/funcobject.c b/Objects/funcobject.c
index f87b0e5d8f1e47..f8dd10a346d613 100644
--- a/Objects/funcobject.c
+++ b/Objects/funcobject.c
@@ -1256,7 +1256,7 @@ _PyFunction_VerifyStateless(PyThreadState *tstate, PyObject *func)
         return -1;
     }
     // Check the builtins.
-    PyObject *builtinsns = PyFunction_GET_BUILTINS(func);
+    PyObject *builtinsns = _PyFunction_GET_BUILTINS(func);
     if (builtinsns != NULL && !PyDict_Check(builtinsns)) {
         _PyErr_Format(tstate, PyExc_TypeError,
                       "unsupported builtins %R", builtinsns);