diff --git a/CMakeLists.txt b/CMakeLists.txt
index 758e0057f5fe0..1e2ad03b1bd1b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -37,10 +37,10 @@ if(WIN32)
     add_definitions(-D_CRT_SECURE_NO_WARNINGS -DWDDM_VERSION_NUMBER=23)
 endif()
 
-set(CMAKE_C_FLAGS_RELEASEINTERNAL ${CMAKE_C_FLAGS_RELEASE})
-set(CMAKE_CXX_FLAGS_RELEASEINTERNAL ${CMAKE_CXX_FLAGS_RELEASE})
-set(CMAKE_SHARED_LINKER_FLAGS_RELEASEINTERNAL ${CMAKE_SHARED_LINKER_FLAGS_RELEASE})
-set(CMAKE_EXE_LINKER_FLAGS_RELEASEINTERNAL ${CMAKE_EXE_LINKER_FLAGS_RELEASE})
+set(CMAKE_C_FLAGS_RELEASEINTERNAL "${CMAKE_C_FLAGS_RELEASE}")
+set(CMAKE_CXX_FLAGS_RELEASEINTERNAL "${CMAKE_CXX_FLAGS_RELEASE}")
+set(CMAKE_SHARED_LINKER_FLAGS_RELEASEINTERNAL "${CMAKE_SHARED_LINKER_FLAGS_RELEASE}")
+set(CMAKE_EXE_LINKER_FLAGS_RELEASEINTERNAL "${CMAKE_EXE_LINKER_FLAGS_RELEASE}")
 
 string(TOLOWER "${CMAKE_BUILD_TYPE}" BUILD_TYPE_lower)
 if("${BUILD_TYPE_lower}" STREQUAL "releaseinternal")