diff --git a/tests/run-make/debugger-visualizer-dep-info/foo.py b/tests/run-make/debugger-visualizer-dep-info/foo.py
index 1bb8bf6d7fd..d319792657e 100644
--- a/tests/run-make/debugger-visualizer-dep-info/foo.py
+++ b/tests/run-make/debugger-visualizer-dep-info/foo.py
@@ -1 +1,6 @@
-# empty
+# This is a Python script, but we don't actually run it.
+# So if you're trying to remove Python scripts from the test suite,
+# be aware that there's no value in trying to get rid of this one.
+#
+# It just needs to exist so that the compiler can embed it via
+# `#![debugger_visualizer(gdb_script_file = "...")]`.