diff --git a/CMakeLists.txt b/CMakeLists.txt
index a3431b61..e0d77706 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,6 +16,7 @@ endif()
 
 option(ISLE_BUILD_APP "Build isle application" ON)
 option(ISLE_ASAN "Enable Address Sanitizer" OFF)
+option(ISLE_UBSAN "Enable Undefined Behavior Sanitizer" OFF)
 option(ISLE_WERROR "Treat warnings as errors" OFF)
 cmake_dependent_option(ISLE_USE_DX5 "Build with internal DirectX 5 SDK" "${NOT_MINGW}" "WIN32;CMAKE_SIZEOF_VOID_P EQUAL 4" OFF)
 cmake_dependent_option(ISLE_MINIWIN "Use miniwin and minimfc" ON "NOT ISLE_USE_DX5" OFF)
@@ -74,6 +75,11 @@ if (ISLE_ASAN)
   add_link_options(-fsanitize=address)
 endif()
 
+if (ISLE_UBSAN)
+  add_compile_options(-fsanitize=undefined -fno-sanitize-recover=undefined)
+  add_link_options(-fsanitize=undefined)
+endif()
+
 #if (NOT WIN32)
 add_library(miniwin STATIC EXCLUDE_FROM_ALL
   miniwin/miniwin/src/miniwin.cpp