diff --git a/cmake/ACGCommon.cmake b/cmake/ACGCommon.cmake
index 824cf73a983458ad4da0e600b2b5bad849efe175..fce1fed0b874567a4d90cee52798e6d73dd4f8ba 100644
--- a/cmake/ACGCommon.cmake
+++ b/cmake/ACGCommon.cmake
@@ -20,7 +20,7 @@ if ( BLOCK_IN_SOURCE_BUILD )
 endif()
 
 # allow only Debug and Release builds
-set (CMAKE_CONFIGURATION_TYPES "Debug;Release;RelWithDebInfo" CACHE STRING "" FORCE)
+set (CMAKE_CONFIGURATION_TYPES "Debug;Release;RelWithDebInfo" CACHE STRING "")
 mark_as_advanced (CMAKE_CONFIGURATION_TYPES)
 
 # set Debus as default build target