diff --git a/parser/CMakeLists.txt b/parser/CMakeLists.txt
index 1cfcc94..59cdb65 100644
--- a/parser/CMakeLists.txt
+++ b/parser/CMakeLists.txt
@@ -52,7 +52,6 @@ target_compile_options(fmk_parser PRIVATE
 
 target_compile_definitions(fmk_parser PRIVATE
     PROTOBUF_INLINE_NOT_IN_HEADERS=0
-    $<$<STREQUAL:${ENABLE_OPEN_SRC},True>:ONLY_COMPILE_OPEN_SRC>
 )
 
 target_include_directories(fmk_parser PRIVATE
@@ -136,7 +135,6 @@ target_compile_definitions(fmk_parser_stub PRIVATE
     PROTOBUF_INLINE_NOT_IN_HEADERS=0
     REUSE_MEMORY=1
     FMK_HOST_INFER
-    $<$<STREQUAL:${ENABLE_OPEN_SRC},True>:ONLY_COMPILE_OPEN_SRC>
 )
 
 target_include_directories(fmk_parser_stub PRIVATE