diff --git a/CMakeLists.txt b/CMakeLists.txt
index 977f26c1..d7c4039d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -41,7 +41,8 @@ tde_setup_paths( )
 
 ##### optional stuff ############################
 
-option( WITH_ARTS        "Enable aRts support" ON )
+option( WITH_ALL_OPTIONS "Enable all optional support" OFF )
+option( WITH_ARTS        "Enable aRts support" ${WITH_ALL_OPTIONS} )
 
 
 ##### options comments ##########################