diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8583d9b..ae28718 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -55,7 +55,7 @@ if (${IS_GNU} OR ${IS_CLANG})
             add_definitions(-D_GLIBCXX_PARALLEL)
         endif()
     endif()
-    set(CMAKE_CXX_FLAGS "-flto ${CMAKE_CXX_FLAGS} -pipe -fstack-protector-strong -fstack-clash-protection -funwind-tables -fasynchronous-unwind-tables -frtti -fexceptions")
+    set(CMAKE_CXX_FLAGS "-flto ${CMAKE_CXX_FLAGS} -fstrict-enums -pipe -fstack-protector-strong -fstack-clash-protection -funwind-tables -fasynchronous-unwind-tables -frtti -fexceptions")
     set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -ffunction-sections -fdata-sections -fmerge-all-constants -ftree-vectorize")
     include(CheckCXXCompilerFlag)
     set(CF_PROTECTION "-fcf-protection")