diff --git a/proto/CMakeLists.txt b/proto/CMakeLists.txt
index 1e2c848f..22fe4817 100644
--- a/proto/CMakeLists.txt
+++ b/proto/CMakeLists.txt
@@ -1,7 +1,5 @@
 include_guard()
 
-# get_filename_component(hw_proto "quokka.proto" ABSOLUTE)
-
 set(PROTO_BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}")
 
 add_library(quokka_proto OBJECT "${CMAKE_CURRENT_LIST_DIR}/quokka.proto")
@@ -14,5 +12,4 @@ target_link_libraries(quokka_proto PUBLIC protobuf::libprotobuf)
 
 protobuf_generate(
         TARGET quokka_proto
-        LANGUAGE python
-        OUT_VARS PROTO_PY)
+        LANGUAGE python)