diff --git a/backends/functional/cxx.cc b/backends/functional/cxx.cc
index b8b25df8b..1f677120a 100644
--- a/backends/functional/cxx.cc
+++ b/backends/functional/cxx.cc
@@ -246,6 +246,8 @@ struct FunctionalCxxBackend : public Backend
 	{
 		//   |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
 		log("\n");
+		log("TODO: add help message\n");
+		log("\n");
     }
 
 	void printCxx(std::ostream &stream, std::string, Module *module)
diff --git a/backends/functional/test_generic.cc b/backends/functional/test_generic.cc
index 10a7a50f0..dc235d79a 100644
--- a/backends/functional/test_generic.cc
+++ b/backends/functional/test_generic.cc
@@ -122,6 +122,8 @@ struct FunctionalTestGeneric : public Pass
 	{
 		//   |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
 		log("\n");
+		log("TODO: add help message\n");
+		log("\n");
     }
 
 	void execute(std::vector<std::string> args, RTLIL::Design *design) override
diff --git a/passes/cmds/example_dt.cc b/passes/cmds/example_dt.cc
index aaf07dadd..1912d7da1 100644
--- a/passes/cmds/example_dt.cc
+++ b/passes/cmds/example_dt.cc
@@ -27,6 +27,8 @@ struct ExampleDtPass : public Pass
 	{
 		//   |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
 		log("\n");
+		log("TODO: add help message\n");
+		log("\n");
     }