Index: CMakeLists.txt
--- CMakeLists.txt.orig
+++ CMakeLists.txt
@@ -299,7 +299,7 @@ string(COMPARE EQUAL "${CMAKE_INSTALL_PREFIX}" "/usr" 
 if(isusr)
   SET(SYSCONFDIR "/${GR_CONF_DIR}" CACHE PATH "System configuration directory")
 else(isusr)
-  SET(SYSCONFDIR "${CMAKE_INSTALL_PREFIX}/${GR_CONF_DIR}" CACHE PATH "System configuration directory" FORCE)
+  SET(SYSCONFDIR "${CMAKE_INSTALL_PREFIX}/${GR_CONF_DIR}" CACHE PATH "System configuration directory")
 endif(isusr)
 
 SET(GR_PKG_CONF_DIR ${SYSCONFDIR}/${CMAKE_PROJECT_NAME}/conf.d CACHE PATH "Path to install package configs")