diff --git a/src/environments/FinEnv.jl b/src/environments/FinEnv.jl
index 42cc3220..0f2c9f8e 100644
--- a/src/environments/FinEnv.jl
+++ b/src/environments/FinEnv.jl
@@ -93,10 +93,6 @@ function environments(
     )
 end
 
-function environments(below, opp::TimedOperator, above, leftstart, rightstart)
-    return environments(below, opp.op, above, leftstart, rightstart)
-end
-
 function environments(Ψ::WindowMPS, windowH::Window)
     lenvs = environments(Ψ.left_gs, windowH.left)
     renvs = environments(Ψ.right_gs, windowH.right)
diff --git a/src/operators/multipliedoperator.jl b/src/operators/multipliedoperator.jl
index b3c7ff84..a542e6a2 100644
--- a/src/operators/multipliedoperator.jl
+++ b/src/operators/multipliedoperator.jl
@@ -63,4 +63,4 @@ Base.:*(x::MultipliedOperator, v) = x(v);
 
 # don't know a better place to put this
 # environment for MultipliedOperator
-environments(st, x::MultipliedOperator) = environments(st, x.op)
+environments(st,x::MultipliedOperator,args...;kwargs...) = environments(st,x.op,args...;kwargs...)
diff --git a/test/algorithms.jl b/test/algorithms.jl
index d4251099..a25d7190 100644
--- a/test/algorithms.jl
+++ b/test/algorithms.jl
@@ -147,9 +147,9 @@ end
     alg = TDVP()
 
     # with regular MPOHamiltonian
-    H0left = simpleH
-    H0middle = repeat(simpleH, 20) # (= Hmiddle)
-    H0right = simpleH
+    H0left   =  simpleH;
+    H0middle =  repeat(  simpleH, 20);
+    H0right  =  simpleH;
 
     Ψ = InfiniteMPS([ℂ^2], [ℂ^20])
     Ψwindow = WindowMPS(Ψ, 20)
diff --git a/test/states.jl b/test/states.jl
index a773722b..3d9e857e 100644
--- a/test/states.jl
+++ b/test/states.jl
@@ -219,17 +219,8 @@ end
         period = rand(1:4)
         Ψ = InfiniteMPS(fill(d, period), fill(D, period))
 
-        Ψwindow = WindowMPS(rand, ComplexF64, rand(5:10), d, D, Ψ) #does copy Ψ or not?
-
-        @test Ψwindow.left_gs !== Ψwindow.right_gs # not the same reference
-        @test Ψwindow.left_gs ≈ Ψwindow.right_gs  # but the same state
-
-        Ψwindow.left_gs.AC[1] *= 2
-        @test abs(norm(Ψwindow.left_gs) - norm(Ψwindow.right_gs)) > 0.5
-        @test abs(norm(Ψwindow.left_gs) - norm(Ψ)) > 0.5
-
-        Ψwindow = WindowMPS(rand, ComplexF64, rand(5:10), d, D, Ψ, Ψ)
-        @test Ψwindow.left_gs == Ψwindow.right_gs # the same reference
+        Ψwindow = WindowMPS(rand, ComplexF64, rand(5:10), d, D, Ψ, Ψ); # version that does not copy
+        @test Ψwindow.left_gs === Ψwindow.right_gs # the same reference
 
         Ψwindow_copied = copy(Ψwindow)
         @test Ψwindow_copied.left_gs !== Ψwindow_copied.right_gs # not the same reference