diff --git a/tests/mocks/mock_commands.py b/tests/mocks/mock_commands.py
index d64284bc89fb..3c655ad10e3f 100644
--- a/tests/mocks/mock_commands.py
+++ b/tests/mocks/mock_commands.py
@@ -3,4 +3,6 @@
 
 @command("function_based", "Function-based test command")
 def function_based(arg1: int, arg2: str) -> str:
+    """Test function-based command."""
+    # Return a string with the two arguments separated by a dash
     return f"{arg1} - {arg2}"