diff --git a/CMakeLists.txt b/CMakeLists.txt
index 064f445..79e9a8a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -101,6 +101,7 @@ else()
         set(BUILD_FLAGS_DEBUG
                 -g3
                 -gdwarf
+                -fsanitize=undefined
                 -fsanitize-trap=undefined)
         target_compile_options(${PROJECT_NAME} PRIVATE
                                                ${WARNING_FLAGS}