diff --git a/Misc/NEWS.d/next/Build/2022-11-02-19-25-07.gh-issue-99016.R05NkD.rst b/Misc/NEWS.d/next/Build/2022-11-02-19-25-07.gh-issue-99016.R05NkD.rst
new file mode 100644
index 00000000000000..df189daca3a230
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2022-11-02-19-25-07.gh-issue-99016.R05NkD.rst
@@ -0,0 +1 @@
+Fix build with ``PYTHON_FOR_REGEN=python3.8``.
diff --git a/Tools/scripts/generate_opcode_h.py b/Tools/scripts/generate_opcode_h.py
index 6a04297879f2cb..5b225f27c4f7cf 100644
--- a/Tools/scripts/generate_opcode_h.py
+++ b/Tools/scripts/generate_opcode_h.py
@@ -102,7 +102,7 @@ def main(opcode_py, outfile='Include/opcode.h', internaloutfile='Include/interna
     opname_including_specialized[255] = 'DO_TRACING'
     used[255] = True
 
-    with (open(outfile, 'w') as fobj, open(internaloutfile, 'w') as iobj):
+    with open(outfile, 'w') as fobj, open(internaloutfile, 'w') as iobj:
         fobj.write(header)
         iobj.write(internal_header)