diff --git a/Include/longobject.h b/Include/longobject.h
index 4dc2e18..6bc8275 100644
--- a/Include/longobject.h
+++ b/Include/longobject.h
@@ -43,15 +43,15 @@
 
 /* Issue #1983: pid_t can be longer than a C long on some systems */
 #if !defined(SIZEOF_PID_T) || SIZEOF_PID_T == SIZEOF_INT
-#define PARSE_PID "i"
+#define _Py_PARSE_PID "i"
 #define PyLong_FromPid PyLong_FromLong
 #define PyLong_AsPid PyLong_AsLong
 #elif SIZEOF_PID_T == SIZEOF_LONG
-#define PARSE_PID "l"
+#define _Py_PARSE_PID "l"
 #define PyLong_FromPid PyLong_FromLong
 #define PyLong_AsPid PyLong_AsLong
 #elif defined(SIZEOF_LONG_LONG) && SIZEOF_PID_T == SIZEOF_LONG_LONG
-#define PARSE_PID "L"
+#define _Py_PARSE_PID "L"
 #define PyLong_FromPid PyLong_FromLongLong
 #define PyLong_AsPid PyLong_AsLongLong
 #else
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index a18ef8e..5076d3b 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -4012,7 +4012,7 @@
 posix_getpgid(PyObject *self, PyObject *args)
 {
 	pid_t pid, pgid;
-	if (!PyArg_ParseTuple(args, PARSE_PID ":getpgid", &pid))
+	if (!PyArg_ParseTuple(args, _Py_PARSE_PID ":getpgid", &pid))
 		return NULL;
 	pgid = getpgid(pid);
 	if (pgid < 0)
@@ -4124,7 +4124,7 @@
 {
 	pid_t pid;
 	int sig;
-	if (!PyArg_ParseTuple(args, PARSE_PID "i:kill", &pid, &sig))
+	if (!PyArg_ParseTuple(args, _Py_PARSE_PID "i:kill", &pid, &sig))
 		return NULL;
 #if defined(PYOS_OS2) && !defined(PYCC_GCC)
     if (sig == XCPT_SIGNAL_INTR || sig == XCPT_SIGNAL_BREAK) {
@@ -4162,7 +4162,7 @@
 	   a pid_t. Since getpgrp() returns a pid_t, we assume killpg should
 	   take the same type. Moreover, pid_t is always at least as wide as
 	   int (else compilation of this module fails), which is safe. */
-	if (!PyArg_ParseTuple(args, PARSE_PID "i:killpg", &pgid, &sig))
+	if (!PyArg_ParseTuple(args, _Py_PARSE_PID "i:killpg", &pgid, &sig))
 		return NULL;
 	if (killpg(pgid, sig) == -1)
 		return posix_error();
@@ -4519,7 +4519,7 @@
 	WAIT_TYPE status;
 	WAIT_STATUS_INT(status) = 0;
 
-	if (!PyArg_ParseTuple(args, PARSE_PID "i:wait4", &pid, &options))
+	if (!PyArg_ParseTuple(args, _Py_PARSE_PID "i:wait4", &pid, &options))
 		return NULL;
 
 	Py_BEGIN_ALLOW_THREADS
@@ -4543,7 +4543,7 @@
 	WAIT_TYPE status;
 	WAIT_STATUS_INT(status) = 0;
 
-	if (!PyArg_ParseTuple(args, PARSE_PID "i:waitpid", &pid, &options))
+	if (!PyArg_ParseTuple(args, _Py_PARSE_PID "i:waitpid", &pid, &options))
 		return NULL;
 	Py_BEGIN_ALLOW_THREADS
 	pid = waitpid(pid, &status, options);
@@ -4567,7 +4567,7 @@
 	Py_intptr_t pid;
 	int status, options;
 
-	if (!PyArg_ParseTuple(args, PARSE_PID "i:waitpid", &pid, &options))
+	if (!PyArg_ParseTuple(args, _Py_PARSE_PID "i:waitpid", &pid, &options))
 		return NULL;
 	Py_BEGIN_ALLOW_THREADS
 	pid = _cwait(&status, pid, options);
@@ -4783,7 +4783,7 @@
 {
 	pid_t pid;
 	int sid;
-	if (!PyArg_ParseTuple(args, PARSE_PID ":getsid", &pid))
+	if (!PyArg_ParseTuple(args, _Py_PARSE_PID ":getsid", &pid))
 		return NULL;
 	sid = getsid(pid);
 	if (sid < 0)
@@ -4818,7 +4818,7 @@
 {
 	pid_t pid;
 	int pgrp;
-	if (!PyArg_ParseTuple(args, PARSE_PID "i:setpgid", &pid, &pgrp))
+	if (!PyArg_ParseTuple(args, _Py_PARSE_PID "i:setpgid", &pid, &pgrp))
 		return NULL;
 	if (setpgid(pid, pgrp) < 0)
 		return posix_error();
@@ -4858,7 +4858,7 @@
 {
 	int fd;
 	pid_t pgid;
-	if (!PyArg_ParseTuple(args, "i" PARSE_PID ":tcsetpgrp", &fd, &pgid))
+	if (!PyArg_ParseTuple(args, "i" _Py_PARSE_PID ":tcsetpgrp", &fd, &pgid))
 		return NULL;
 	if (tcsetpgrp(fd, pgid) < 0)
 		return posix_error();