diff --git a/tests/simulation/sim_repressilator.jl b/tests/simulation/sim_repressilator.jl
index f5142c4ba5a60457fef298b30bd4dfb00ea3f599..60d37dc75e14ebb2f71a008a7e4c588f713955a9 100644
--- a/tests/simulation/sim_repressilator.jl
+++ b/tests/simulation/sim_repressilator.jl
@@ -2,8 +2,7 @@
 using MarkovProcesses
 
 load_model("repressilator")
-set_param!(repressilator, [:α, :n, :β, :α0], [1.0, 2.0, 5.0, 1000.0])
-set_x0!(repressilator, [:m1, :m2, :m3, :p1, :p2, :p3], [0, 2, 0, 1, 2, 3])
+simulate(repressilator)
 
 return true