diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 86f71def88..fd07b2b008 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -105,7 +105,7 @@ repos:
   rev: "4.0.1"
   hooks:
   - id: flake8
-    exclude: ^(docs/.*|tools/.*)$
+    exclude: ^(docs/.*|tools/.*|ubench/.*)$
     additional_dependencies: *flake8_dependencies
 
 # PyLint has native support - not always usable, but works for us
diff --git a/tests/namespace_visibility_1.cpp b/tests/namespace_visibility_1.cpp
new file mode 100644
index 0000000000..96e602e38e
--- /dev/null
+++ b/tests/namespace_visibility_1.cpp
@@ -0,0 +1,3 @@
+#include "pybind11/pybind11.h"
+
+PYBIND11_MODULE(namespace_visibility_1, m) { m.doc() = "ns_vis_1"; }
diff --git a/tests/namespace_visibility_2.cpp b/tests/namespace_visibility_2.cpp
new file mode 100644
index 0000000000..b596cd3693
--- /dev/null
+++ b/tests/namespace_visibility_2.cpp
@@ -0,0 +1,3 @@
+#include "pybind11/pybind11.h"
+
+PYBIND11_MODULE(namespace_visibility_2, m) { m.doc() = "ns_vis_2"; }
diff --git a/tests/test_namespace_visibility.py b/tests/test_namespace_visibility.py
new file mode 100644
index 0000000000..e641449177
--- /dev/null
+++ b/tests/test_namespace_visibility.py
@@ -0,0 +1,13 @@
+import namespace_visibility_1
+import namespace_visibility_2
+import pytest
+
+
+def test_namespace_visibility():
+    modules = (
+        namespace_visibility_1,
+        namespace_visibility_2,
+    )
+    for m in modules:
+        if m.__doc__ != "ns_vis_1":
+            pytest.skip(f"Not surprised: {m.__doc__}")