diff --git a/Include/sysmodule.h b/Include/sysmodule.h
index 16af1196ec9..bf962b5a88f 100644
--- a/Include/sysmodule.h
+++ b/Include/sysmodule.h
@@ -19,9 +19,6 @@ PyAPI_FUNC(void) PySys_WriteStdout(const char *format, ...)
 PyAPI_FUNC(void) PySys_WriteStderr(const char *format, ...)
 			Py_GCC_ATTRIBUTE((format(printf, 1, 2)));
 
-PyAPI_DATA(PyObject *) _PySys_TraceFunc, *_PySys_ProfileFunc;
-PyAPI_DATA(int) _PySys_CheckInterval;
-
 PyAPI_FUNC(void) PySys_ResetWarnOptions(void);
 PyAPI_FUNC(void) PySys_AddWarnOption(char *);
 PyAPI_FUNC(int) PySys_HasWarnOptions(void);