diff --git a/test/runtests.jl b/test/runtests.jl
index 8b3d350..75982ac 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -14,7 +14,7 @@ end
     obs = Observable(0)
     obs2 = Observable(1)
     y = Observable(0)
-    onany(obs, obs2; update=true) do x, y
+    onany(obs, obs2; update=true) do x, _
         y[] += 1
     end
     @test y[] == 1