diff --git a/optionals/asdg_comp/config.cpp b/optionals/asdg_comp/config.cpp
index 1a51ba0432..d76a4da654 100644
--- a/optionals/asdg_comp/config.cpp
+++ b/optionals/asdg_comp/config.cpp
@@ -31,7 +31,7 @@ class asdg_OpticRail1913: asdg_OpticRail
     {
 	ACE_optic_Hamr_2D = 1;
 	ACE_optic_Hamr_PIP = 1;
-        ACE_optic_Arco_2D = 1;
+	ACE_optic_Arco_2D = 1;
 	ACE_optic_Arco_PIP = 1;
 	ACE_optic_MRCO_2D = 1;
 	ACE_optic_SOS_2D = 1;