diff --git a/userspace/engine/falco_engine.cpp b/userspace/engine/falco_engine.cpp
index 6d81af58..65c4ef80 100644
--- a/userspace/engine/falco_engine.cpp
+++ b/userspace/engine/falco_engine.cpp
@@ -771,7 +771,7 @@ void falco_engine::get_json_evt_types(libsinsp::filter::ast::expr* ast,
 	auto evtcodes = libsinsp::filter::ast::ppm_event_codes(ast);
 	libsinsp::events::set<ppm_sc_code> syscodes;
 #ifdef __linux__
-	auto syscodes = libsinsp::filter::ast::ppm_sc_codes(ast);
+	syscodes = libsinsp::filter::ast::ppm_sc_codes(ast);
 #endif
 	auto syscodes_to_evt_names = libsinsp::events::sc_set_to_event_names(syscodes);
 	auto evtcodes_to_evt_names = libsinsp::events::event_set_to_names(evtcodes, false);