diff --git a/script/geometry/fourcv.py b/script/geometry/fourcv.py
index 17d91df..2ac2ed2 100644
--- a/script/geometry/fourcv.py
+++ b/script/geometry/fourcv.py
@@ -5,7 +5,7 @@ run("diffutils")
 ###################################################################################################
 
 #alpha, delta, gamma, omegaV
-setup_diff(fourcv, energy, ("mu", "delta", "gam", "eta"))
+setup_diff(fourcv, energy, ("mu", "delta", "gam", "eta"), simultaneous_move=True)
 
 
 #setup_axis(alpha, alpha.getMinValue(), alpha.getMaxValue())