diff --git a/Makefile b/Makefile
index 4d0da8d..abce136 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 MAKEFLAGS="-j $(grep -c ^processor /proc/cpuinfo)"
-CXXFLAGS:=$(CXXFLAGS) -std=c++20 -Wall -Wextra -Werror=switch
+CXXFLAGS:=$(CXXFLAGS) -std=c++20 -Wall -Wextra -Werror=switch -Werror=unused-result
 CPPFLAGS:=$(CPPFLAGS) -Ilib/expected/ -Ilib/ut/ -Isrc/
 
 Obj=bin/errors.o        \
diff --git a/src/musique.hh b/src/musique.hh
index 3302df8..732e629 100644
--- a/src/musique.hh
+++ b/src/musique.hh
@@ -96,7 +96,7 @@ struct Error
 std::ostream& operator<<(std::ostream& os, Error const& err);
 
 template<typename T>
-struct Result : tl::expected<T, Error>
+struct [[nodiscard("This value may contain critical error, so it should NOT be ignored")]] Result : tl::expected<T, Error>
 {
 	using Storage = tl::expected<T, Error>;