diff --git a/Python/stdlib_module_names.h b/Python/stdlib_module_names.h
index 980438545ac2f4..b09b8dc7a394ae 100644
--- a/Python/stdlib_module_names.h
+++ b/Python/stdlib_module_names.h
@@ -52,6 +52,7 @@ static const char* _Py_stdlib_module_names[] = {
 "_opcode",
 "_operator",
 "_osx_support",
+"_overlapped",
 "_pickle",
 "_posixshmem",
 "_posixsubprocess",
diff --git a/Tools/scripts/generate_stdlib_module_names.py b/Tools/scripts/generate_stdlib_module_names.py
index 046b9eb1d2df62..716a6d4b7a07f3 100644
--- a/Tools/scripts/generate_stdlib_module_names.py
+++ b/Tools/scripts/generate_stdlib_module_names.py
@@ -42,6 +42,7 @@
 # Windows extension modules
 WINDOWS_MODULES = (
     '_msi',
+    '_overlapped',
     '_testconsole',
     '_winapi',
     'msvcrt',