diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5429050b..709a8eaf 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -44,6 +44,8 @@ if(CMAKE_BUILD_TYPE)
         set(BUILDTYPE_LOWER "debugoptimized")
     elseif(BUILDTYPE_LOWER STREQUAL "minsizerel")
         set(BUILDTYPE_LOWER "minsize")
+    elseif(BUILDTYPE_LOWER STREQUAL "none")
+        set(BUILDTYPE_LOWER "empty")
     else()
         set(BUILDTYPE_LOWER "release")
     endif()