diff --git a/test/runtests.jl b/test/runtests.jl
index da621af70840675041437e0afb30791a2762892e..be2256f851e4ae3d1ccbe4a18648b1b3226ca556 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -69,7 +69,7 @@ end
 LabProcesses.finalize(P)
 na = 6
 nb = 5
-arxtf = arx(h, y[:], u, na, nb; λ = 0)
+arxtf,_ = arx(h, y[:], u, na, nb; λ = 0)
 
 w1_100 = logspace(-1,log10(100),500)
 true_resp = freqresp(P.s.sys, w1_100)