diff --git a/src/plugins/lua/CMakeLists.txt b/src/plugins/lua/CMakeLists.txt
index 8a420bd43..e67930867 100644
--- a/src/plugins/lua/CMakeLists.txt
+++ b/src/plugins/lua/CMakeLists.txt
@@ -27,6 +27,7 @@ add_library(lua MODULE
 set_target_properties(lua PROPERTIES PREFIX "")
 
 if(LUA_FOUND)
+  add_definitions(${LUA_CFLAGS})
   include_directories(${LUA_INCLUDE_DIRS})
   target_link_libraries(lua ${LUA_LDFLAGS} weechat_plugins_scripts coverage_config)
 endif()