diff --git a/test/domain_connectors.jl b/test/domain_connectors.jl
index cc885d6822..091f0c5537 100644
--- a/test/domain_connectors.jl
+++ b/test/domain_connectors.jl
@@ -155,7 +155,4 @@ sys = structural_simplify(odesys)
 @test length(equations(sys)) == length(states(sys))
 
 sys_defs = ModelingToolkit.defaults(sys)
-@test Symbol(sys_defs[csys.vol.port.ρ]) == Symbol(csys.fluid.ρ)
-
-
-@test_nowarn structural_simplify(one_fluid_system)
\ No newline at end of file
+@test Symbol(sys_defs[csys.vol.port.ρ]) == Symbol(csys.fluid.ρ)
\ No newline at end of file