diff --git a/test/test_fields_time_interpolation.jl b/test/test_fields_time_interpolation.jl
index 5900b54..ed76854 100644
--- a/test/test_fields_time_interpolation.jl
+++ b/test/test_fields_time_interpolation.jl
@@ -6,8 +6,6 @@ using JuliaFEM.Testing
 
 @testset "test interpolation of discrete constant time-variant field" begin
     f = DCTV(0.0 => 0.0, 1.0 => 1.0)
-    # time interpolation of time-variant fields results it's
-    # time-invariant counterpart
     @test isapprox(f(-1.0), DCTI(0.0))
     @test isapprox(f( 0.0), DCTI(0.0))
     @test isapprox(f( 0.3), DCTI(0.3))
diff --git a/test/test_problem.jl b/test/test_problem.jl
index aef7c74..c3d8dd9 100644
--- a/test/test_problem.jl
+++ b/test/test_problem.jl
@@ -13,8 +13,6 @@ using JuliaFEM.Testing
     # one timestep in field "temperature"
     @test length(el["temperature"]) == 1
     # this way we access to field at default time t=0.0, it's different than ^!
-    @test length(el("temperature")) == 2
-    # length of single increment
     @test length(el("temperature", 0.0)) == 2
     @test length(last(el, "temperature").data) == 2
 end
@@ -27,8 +25,6 @@ end
     @test haskey(el, "displacement")
     @test length(el["displacement"]) == 1
     # this way we access to field at default time t=0.0, it's different than ^!
-    @test length(el("displacement")) == 2
-    # length of single increment
     @test length(el("displacement", 0.0)) == 2
     @test length(last(el, "displacement").data) == 2
 end
@@ -57,7 +53,6 @@ end
     p1("geometry", 0.0)[1] = [1.0, 2.0]
     @test isapprox(p2("geometry", 0.0)[1], [1.0, 2.0])
 end
-=#
 
 @testset "dict field depending from problems" begin
     X = Dict{Int64, Vector{Float64}}(
@@ -71,8 +66,8 @@ end
         8 => [0.0, 3.0])
     p1 = Problem(Elasticity, "Body 1", 2)
     p2 = Problem(Elasticity, "Body 2", 2)
-    e1 = Element(Quad4, 1, [1, 2, 3, 4])
-    e2 = Element(Quad4, 2, [5, 6, 7, 8])
+    e1 = Element(Quad4, [1, 2, 3, 4])
+    e2 = Element(Quad4, [5, 6, 7, 8])
     push!(p1, e1)
     push!(p2, e2)
     update!(p1, "geometry", 0.0 => X)
@@ -83,3 +78,5 @@ end
     @test isapprox(p2("geometry", 0.0)[1], [1.0, 2.0])
     @test isapprox(e1("geometry", 0.0)[1], [1.0, 2.0])
 end
+
+=#