diff --git a/Include/internal/pycore_global_objects_fini_generated.h b/Include/internal/pycore_global_objects_fini_generated.h
index ad65d1fda18e3b..63888eab7b4481 100644
--- a/Include/internal/pycore_global_objects_fini_generated.h
+++ b/Include/internal/pycore_global_objects_fini_generated.h
@@ -1080,6 +1080,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(last_value));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(latin1));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(leaf_size));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(legacy));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(len));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(length));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(level));
@@ -1253,6 +1254,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(setstate));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(shape));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(shared));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(short));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(show_cmd));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(signed));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(signum));
diff --git a/Include/internal/pycore_global_strings.h b/Include/internal/pycore_global_strings.h
index 88283fa625706f..b863a7c970e3d4 100644
--- a/Include/internal/pycore_global_strings.h
+++ b/Include/internal/pycore_global_strings.h
@@ -571,6 +571,7 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(last_value)
         STRUCT_FOR_ID(latin1)
         STRUCT_FOR_ID(leaf_size)
+        STRUCT_FOR_ID(legacy)
         STRUCT_FOR_ID(len)
         STRUCT_FOR_ID(length)
         STRUCT_FOR_ID(level)
@@ -744,6 +745,7 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(setstate)
         STRUCT_FOR_ID(shape)
         STRUCT_FOR_ID(shared)
+        STRUCT_FOR_ID(short)
         STRUCT_FOR_ID(show_cmd)
         STRUCT_FOR_ID(signed)
         STRUCT_FOR_ID(signum)
diff --git a/Include/internal/pycore_runtime_init_generated.h b/Include/internal/pycore_runtime_init_generated.h
index a08d77ab0a06b9..3ce7200ffeb6a4 100644
--- a/Include/internal/pycore_runtime_init_generated.h
+++ b/Include/internal/pycore_runtime_init_generated.h
@@ -1078,6 +1078,7 @@ extern "C" {
     INIT_ID(last_value), \
     INIT_ID(latin1), \
     INIT_ID(leaf_size), \
+    INIT_ID(legacy), \
     INIT_ID(len), \
     INIT_ID(length), \
     INIT_ID(level), \
@@ -1251,6 +1252,7 @@ extern "C" {
     INIT_ID(setstate), \
     INIT_ID(shape), \
     INIT_ID(shared), \
+    INIT_ID(short), \
     INIT_ID(show_cmd), \
     INIT_ID(signed), \
     INIT_ID(signum), \
diff --git a/Include/internal/pycore_unicodeobject_generated.h b/Include/internal/pycore_unicodeobject_generated.h
index 57c0a7d51f89f3..e76e603230a5db 100644
--- a/Include/internal/pycore_unicodeobject_generated.h
+++ b/Include/internal/pycore_unicodeobject_generated.h
@@ -2072,6 +2072,10 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
     assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_ID(legacy);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(len);
     _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
@@ -2764,6 +2768,10 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
     assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_ID(short);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(show_cmd);
     _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
diff --git a/Python/sysmodule.c b/Python/sysmodule.c
index a5b42d48e432d7..832d2afff806ab 100644
--- a/Python/sysmodule.c
+++ b/Python/sysmodule.c
@@ -610,7 +610,7 @@ sys_breakpointhook(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyOb
 
     if (last_dot == NULL) {
         /* The breakpoint is a built-in, e.g. PYTHONBREAKPOINT=int */
-        modulepath = PyUnicode_FromString("builtins");
+        modulepath = &_Py_ID(builtins);
         attrname = envar;
     }
     else if (last_dot != envar) {
@@ -3873,9 +3873,9 @@ _PySys_InitCore(PyThreadState *tstate, PyObject *sysdict)
     SET_SYS("builtin_module_names", list_builtin_module_names());
     SET_SYS("stdlib_module_names", list_stdlib_module_names());
 #if PY_BIG_ENDIAN
-    SET_SYS_FROM_STRING("byteorder", "big");
+    SET_SYS("byteorder", &_Py_ID(big));
 #else
-    SET_SYS_FROM_STRING("byteorder", "little");
+    SET_SYS("byteorder", &_Py_ID(little));
 #endif
 
 #ifdef MS_COREDLL
@@ -3917,9 +3917,9 @@ _PySys_InitCore(PyThreadState *tstate, PyObject *sysdict)
 
     /* float repr style: 0.03 (short) vs 0.029999999999999999 (legacy) */
 #if _PY_SHORT_FLOAT_REPR == 1
-    SET_SYS_FROM_STRING("float_repr_style", "short");
+    SET_SYS("float_repr_style", &_Py_ID(short));
 #else
-    SET_SYS_FROM_STRING("float_repr_style", "legacy");
+    SET_SYS("float_repr_style", &_Py_ID(legacy));
 #endif
 
     SET_SYS("thread_info", PyThread_GetInfo());