diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9e12b4e8c..317fc4660 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -60,15 +60,15 @@ if (POLICY CMP0069)
       # set_property(DIRECTORY PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE) do not work?
       string(REPLACE ";" " " CXX_FLAGS_IPO "${CMAKE_CXX_COMPILE_OPTIONS_IPO}")
       message(STATUS "Use link time optimization CXX options: ${CXX_FLAGS_IPO}")
-      set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} ${CXX_FLAGS_IPO}")
+      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_FLAGS_IPO}")
 
       string(REPLACE ";" " " C_FLAGS_IPO "${CMAKE_C_COMPILE_OPTIONS_IPO}")
       message(STATUS "Use link time optimization C options: ${C_FLAGS_IPO}")
-      set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} ${C_FLAGS_IPO}")
+      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${C_FLAGS_IPO}")
 
       string(REPLACE ";" " " LINK_FLAGS_IPO "${CMAKE_CXX_LINK_OPTIONS_IPO}")
       message(STATUS "Use link time optimization linker options: ${LINK_FLAGS_IPO}")
-      set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} ${LINK_FLAGS_IPO}")
+      set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${LINK_FLAGS_IPO}")
     endif()
   endif()
 endif()