diff --git a/Modules/_threadmodule.c b/Modules/_threadmodule.c
index 7a34c5a5a0ef6b..7e1884edf5213e 100644
--- a/Modules/_threadmodule.c
+++ b/Modules/_threadmodule.c
@@ -74,7 +74,7 @@ get_thread_state_by_cls(PyTypeObject *cls)
 
 
 #ifdef MS_WINDOWS
-typedef HRESULT (WINAPI *PF_GET_THREAD_DESCRIPTION)(HANDLE, PCWSTR*);
+typedef HRESULT (WINAPI *PF_GET_THREAD_DESCRIPTION)(HANDLE, PWSTR*);
 typedef HRESULT (WINAPI *PF_SET_THREAD_DESCRIPTION)(HANDLE, PCWSTR);
 static PF_GET_THREAD_DESCRIPTION pGetThreadDescription = NULL;
 static PF_SET_THREAD_DESCRIPTION pSetThreadDescription = NULL;
diff --git a/Python/traceback.c b/Python/traceback.c
index 50a79d78d2e10e..5bfa28f9c7dc8b 100644
--- a/Python/traceback.c
+++ b/Python/traceback.c
@@ -71,7 +71,7 @@ class traceback "PyTracebackObject *" "&PyTraceback_Type"
 
 
 #ifdef MS_WINDOWS
-typedef HRESULT (WINAPI *PF_GET_THREAD_DESCRIPTION)(HANDLE, PCWSTR*);
+typedef HRESULT (WINAPI *PF_GET_THREAD_DESCRIPTION)(HANDLE, PWSTR*);
 static PF_GET_THREAD_DESCRIPTION pGetThreadDescription = NULL;
 #endif