diff --git a/kernel/debug.cmake b/kernel/debug.cmake
index 74074888..c775e522 100644
--- a/kernel/debug.cmake
+++ b/kernel/debug.cmake
@@ -1 +1,2 @@
 target_compile_definitions(moon PRIVATE LOCKED_VALUE_DEBUG)
+target_compile_options(moon PRIVATE -fsanitize=undefined)