diff --git a/devel/bpython/files/patch-setup.py b/devel/bpython/files/patch-setup.py
new file mode 100644
index 000000000000..43b0d717898e
--- /dev/null
+++ b/devel/bpython/files/patch-setup.py
@@ -0,0 +1,11 @@
+--- setup.py.orig	2023-01-18 12:48:13 UTC
++++ setup.py
+@@ -139,7 +139,7 @@ if using_sphinx:
+     build.sub_commands.insert(0, ("build_sphinx_man", None))
+     cmdclass["build_sphinx_man"] = BuildDoc
+ 
+-    if platform.system() in ("FreeBSD", "OpenBSD"):
++    if platform.system() in ("OpenBSD"):
+         man_dir = "man"
+     else:
+         man_dir = "share/man"