diff --git a/script/test/TestFourcvCompact.py b/script/test/TestFourcvCompact.py
index c61ef40..4bdf13d 100644
--- a/script/test/TestFourcvCompact.py
+++ b/script/test/TestFourcvCompact.py
@@ -5,7 +5,7 @@ run("diffutils")
 ###################################################################################################
 
 #alpha, delta, gamma, omegaV
-setup_diff(fourcv, energy, None, ("mu", "delta", "gam", "eta"))
+setup_diff(fourcv, energy, ("mu", "delta", "gam", "eta"))
 print_axis_setup()