diff --git a/module_locks/README.rst b/module_locks/README.rst
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+module_locks Readme
+===================
+
+:scope: Dummy module
+:description: Allows compiling legacy_tests in lib_xua with lib_locks. sc_i2c is used in the tests and it requires module_locks from sc_util, but the definitions in sc_utils conflict with the ones in lib_locks.
+:keywords: dummy
+:boards: XMOS Dev Kit
diff --git a/module_locks/module_build_info b/module_locks/module_build_info
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+# Dummy module used in legacy_tests. See README.rst for more details.