diff --git a/examples/vumps/src/vumps_subspace_expansion.jl b/examples/vumps/src/vumps_subspace_expansion.jl
index 8468afd..d337a0e 100644
--- a/examples/vumps/src/vumps_subspace_expansion.jl
+++ b/examples/vumps/src/vumps_subspace_expansion.jl
@@ -25,6 +25,6 @@ function vumps_subspace_expansion(
   H, ψ; outer_iters, subspace_expansion_kwargs, vumps_kwargs
 )
   return tdvp_subspace_expansion(
-    H, ψ; time_step=-Inf, outer_iters, subspace_expansion_kwargs, vumps_kwargs
+    H, ψ; time_step=(-Inf), outer_iters, subspace_expansion_kwargs, vumps_kwargs
   )
 end
diff --git a/examples/vumps/vumps_hubbard_extended.jl b/examples/vumps/vumps_hubbard_extended.jl
index c899d82..20c7e63 100644
--- a/examples/vumps/vumps_hubbard_extended.jl
+++ b/examples/vumps/vumps_hubbard_extended.jl
@@ -98,8 +98,9 @@ println("\nQN sector of starting finite MPS")
 @show flux(ψfinite)
 
 nsweeps = 15
-maxdims =
-  min.(maxdim, [2, 2, 2, 2, 4, 4, 4, 4, 8, 8, 8, 8, 16, 16, 16, 16, 32, 32, 32, 32, 50])
+maxdims = min.(
+  maxdim, [2, 2, 2, 2, 4, 4, 4, 4, 8, 8, 8, 8, 16, 16, 16, 16, 32, 32, 32, 32, 50]
+)
 @show maxdims
 
 ## setmaxdim!(sweeps, maxdims...)
@@ -119,7 +120,7 @@ Nup_finite = ITensorMPS.expect(ψfinite, "Nup")[nfinite:(nfinite + 1)]
 Ndn_finite = ITensorMPS.expect(ψfinite, "Ndn")[nfinite:(nfinite + 1)]
 Sz_finite = ITensorMPS.expect(ψfinite, "Sz")[nfinite:(nfinite + 1)]
 
-energy_exact = reference(model, Observable("energy"); U=model_params.U / model_params.t)
+energy_exact = reference(model, Observable("energy"); U=(model_params.U / model_params.t))
 
 corr_infinite = correlation_matrix(finite_mps(ψ, 1:10), "Cdagup", "Cup"; sites=2:11)
 corr_finite = correlation_matrix(
diff --git a/src/vumps_generic.jl b/src/vumps_generic.jl
index 85d7db6..6ecf455 100644
--- a/src/vumps_generic.jl
+++ b/src/vumps_generic.jl
@@ -222,7 +222,7 @@ end
 
 function vumps(
   args...;
-  time_step=-Inf,
+  time_step=(-Inf),
   eigsolve_tol=(x -> x / 100),
   solver_tol=eigsolve_tol,
   eager=true,
diff --git a/test/test_iMPOConversions.jl b/test/test_iMPOConversions.jl
index 45ac32f..00da676 100644
--- a/test/test_iMPOConversions.jl
+++ b/test/test_iMPOConversions.jl
@@ -146,9 +146,7 @@ end
   models = [(Model"heisenbergNNN"(), "S=1/2"), (Model"hubbardNNN"(), "Electron")]
   @testset "H=$model, Ncell=$Ncell, NNN=$NNN, Antiferro=$Af, qns=$qns" for (model, site) in
                                                                            models,
-    qns in [false, true],
-    Ncell in 2:6,
-    NNN in 1:(Ncell - 1),
+    qns in [false, true], Ncell in 2:6, NNN in 1:(Ncell - 1),
     Af in [true, false]
 
     if isodd(Ncell) && Af #skip test since Af state does fit inside odd cells.
diff --git a/test/test_vumps.jl b/test/test_vumps.jl
index 9921697..dc6398b 100644
--- a/test/test_vumps.jl
+++ b/test/test_vumps.jl
@@ -43,9 +43,7 @@ end
                                                                                                                                                                                        [
       "sequential", "parallel"
     ],
-    conserve_qns in [true, false],
-    nsites in [1, 2, 3, 4],
-    time_step in [-Inf, -0.5],
+    conserve_qns in [true, false], nsites in [1, 2, 3, 4], time_step in [-Inf, -0.5],
     localham_type in [ITensor, MPO]
 
     if (localham_type == ITensor) && (nsites > 2)
diff --git a/test/test_vumps_extendedising.jl b/test/test_vumps_extendedising.jl
index e6a8de1..5a2bfcd 100644
--- a/test/test_vumps_extendedising.jl
+++ b/test/test_vumps_extendedising.jl
@@ -43,8 +43,7 @@ end
   maxiter = 20
   outer_iters = 4
   for multisite_update_alg in ["sequential", "parallel"],
-    conserve_qns in [true, false],
-    nsites in [1, 2],
+    conserve_qns in [true, false], nsites in [1, 2],
     time_step in [-Inf, -0.5]
 
     vumps_kwargs = (
diff --git a/test/test_vumpsmpo.jl b/test/test_vumpsmpo.jl
index 817103a..f593fdf 100644
--- a/test/test_vumpsmpo.jl
+++ b/test/test_vumpsmpo.jl
@@ -45,8 +45,7 @@ end
                                                                                                                                [
       "sequential", "parallel"
     ],
-    conserve_qns in [true, false],
-    N in [1, 2],
+    conserve_qns in [true, false], N in [1, 2],
     time_step in [-Inf]
 
     vumps_kwargs = (
@@ -117,8 +116,7 @@ end
   energy_finite = expect_three_site(ψfinite, hnfinite, nfinite)
 
   for multisite_update_alg in ["sequential"],
-    conserve_qns in [true, false],
-    nsites in [1, 2],
+    conserve_qns in [true, false], nsites in [1, 2],
     time_step in [-Inf]
 
     vumps_kwargs = (
@@ -190,8 +188,7 @@ end
   temp_translatecell(i::Index, n::Integer) = ITensorInfiniteMPS.translatecelltags(i, n)
 
   for multisite_update_alg in ["sequential"],
-    conserve_qns in [true, false],
-    nsite in [1, 2, 3],
+    conserve_qns in [true, false], nsite in [1, 2, 3],
     time_step in [-Inf]
 
     if nsite > 1 && isodd(nsite) && conserve_qns
diff --git a/test/test_vumpsmpo_fqhe.jl b/test/test_vumpsmpo_fqhe.jl
index a59e8c5..f8b7728 100644
--- a/test/test_vumpsmpo_fqhe.jl
+++ b/test/test_vumpsmpo_fqhe.jl
@@ -52,8 +52,7 @@ end
                                                                                                                                [
       "sequential"
     ],
-    conserve_qns in [true],
-    nsites in [6],
+    conserve_qns in [true], nsites in [6],
     time_step in [-Inf]
 
     vumps_kwargs = (; multisite_update_alg, tol, maxiter, outputlevel=0, time_step)