diff --git a/src/parsers/JsonParser.jl b/src/parsers/JsonParser.jl
index 9c8895e8..00e2d4aa 100644
--- a/src/parsers/JsonParser.jl
+++ b/src/parsers/JsonParser.jl
@@ -95,7 +95,7 @@ end
 
 function write_type(t)
     params = typedict(t)
-    dict = Dict("type" => string(typeof(t).name), "params" => params)
+    dict = Dict("type" => string(t |> typeof |> nameof), "params" => params)
 end
 
 typedict(x) = Dict(fn => getfield(x, fn) for fn ∈ fieldnames(typeof(x)))
diff --git a/test/parsers/JsonParser.jl b/test/parsers/JsonParser.jl
index c5ce3c53..e91eb27f 100644
--- a/test/parsers/JsonParser.jl
+++ b/test/parsers/JsonParser.jl
@@ -1,27 +1,82 @@
-using PowerDynamics: read_powergrid, write_powergrid, Json
-using Test: @test
-
-expected_swing_eq = SwingEq(H=1, P=2, D=3, Ω=12)
-expected_swing_eq_lvs = SwingEqLVS(H=1, P=2, D=3, Ω=12, Γ=13, V=14)
-expected_fourth_order_eq = FourthOrderEq(H=1, P=2, D=3, Ω=12, E_f=13, T_d_dash=14 ,T_q_dash=15 ,X_q_dash=16 ,X_d_dash=17,X_d=18, X_q=19)
-expected_slack = SlackAlgebraic(U=10)
-expected_pq = PQAlgebraic(P=0,Q=10)
-expected_pv = PVAlgebraic(P=10, V=120)
-expected_vsi_minimal = VSIMinimal(τ_P=1,τ_Q=2,K_P=3,K_Q=4,V_r=5,P=6,Q=7)
-expected_vsi_voltage_pt1 = VSIVoltagePT1(τ_v=1,τ_P=2,τ_Q=3,K_P=4,K_Q=5,V_r=6,P=7,Q=8)
-expected_csi_minimal = CSIMinimal(I_r=1)
-expected_exponential_recov_load = ExponentialRecoveryLoad(P0=1, Q0=2, Nps=3, Npt=4, Nqs=5, Nqt=6, Tp=7, Tq=8, V0=9)
+using PowerDynamics:
+    read_powergrid,
+    write_powergrid,
+    Json
+using Test: @test, @test_throws
+
+expected_swing_eq = SwingEq(H = 1, P = 2, D = 3, Ω = 12)
+expected_swing_eq_lvs = SwingEqLVS(H = 1, P = 2, D = 3, Ω = 12, Γ = 13, V = 14)
+expected_fourth_order_eq = FourthOrderEq(
+    H = 1,
+    P = 2,
+    D = 3,
+    Ω = 12,
+    E_f = 13,
+    T_d_dash = 14,
+    T_q_dash = 15,
+    X_q_dash = 16,
+    X_d_dash = 17,
+    X_d = 18,
+    X_q = 19,
+)
+expected_slack = SlackAlgebraic(U = 10)
+expected_pq = PQAlgebraic(P = 0, Q = 10)
+expected_pv = PVAlgebraic(P = 10, V = 120)
+expected_vsi_minimal = VSIMinimal(τ_P = 1, τ_Q = 2, K_P = 3, K_Q = 4, V_r = 5, P = 6, Q = 7)
+expected_vsi_voltage_pt1 =
+    VSIVoltagePT1(τ_v = 1, τ_P = 2, τ_Q = 3, K_P = 4, K_Q = 5, V_r = 6, P = 7, Q = 8)
+expected_csi_minimal = CSIMinimal(I_r = 1)
+expected_exponential_recov_load = ExponentialRecoveryLoad(
+    P0 = 1,
+    Q0 = 2,
+    Nps = 3,
+    Npt = 4,
+    Nqs = 5,
+    Nqt = 6,
+    Tp = 7,
+    Tq = 8,
+    V0 = 9,
+)
 expected_fourth_order_eq_avr = FourthOrderEqGovernorExciterAVR(
-H=1, P=2, D=3, Ω=4, T_d_dash=5 ,T_q_dash=6,
-X_q_dash=7 ,X_d_dash=8,X_d=9, X_q=10, T_e=11, T_a=12, T_f=13, K_e=14, K_a=15,
-K_f=16, V_ref=17, R_d=18, T_sv=19, T_ch=20)
+    H = 1,
+    P = 2,
+    D = 3,
+    Ω = 4,
+    T_d_dash = 5,
+    T_q_dash = 6,
+    X_q_dash = 7,
+    X_d_dash = 8,
+    X_d = 9,
+    X_q = 10,
+    T_e = 11,
+    T_a = 12,
+    T_f = 13,
+    K_e = 14,
+    K_a = 15,
+    K_f = 16,
+    V_ref = 17,
+    R_d = 18,
+    T_sv = 19,
+    T_ch = 20,
+)
 
-expected_static_line = StaticLine(from=1, to=2, Y=0.1+5im)
-expected_pimodel_line = PiModelLine(from=1, to=3, y=0.1+5im, y_shunt_km=200, y_shunt_mk=300)
+expected_static_line = StaticLine(from = 1, to = 2, Y = 0.1 + 5im)
+expected_pimodel_line =
+    PiModelLine(from = 1, to = 3, y = 0.1 + 5im, y_shunt_km = 200, y_shunt_mk = 300)
 
-expected_nodes  = [expected_swing_eq, expected_swing_eq_lvs, expected_fourth_order_eq, expected_slack,
-expected_pq, expected_pv, expected_vsi_minimal, expected_vsi_voltage_pt1, expected_csi_minimal,
-expected_exponential_recov_load, expected_fourth_order_eq_avr]
+expected_nodes = [
+    expected_swing_eq,
+    expected_swing_eq_lvs,
+    expected_fourth_order_eq,
+    expected_slack,
+    expected_pq,
+    expected_pv,
+    expected_vsi_minimal,
+    expected_vsi_voltage_pt1,
+    expected_csi_minimal,
+    expected_exponential_recov_load,
+    expected_fourth_order_eq_avr,
+]
 expected_lines = [expected_static_line, expected_pimodel_line]
 
 grid = read_powergrid(joinpath(@__DIR__, "grid.json"), Json)
@@ -29,7 +84,7 @@ grid = read_powergrid(joinpath(@__DIR__, "grid.json"), Json)
 @test grid.lines == expected_lines
 
 target_dir = "../target"
-export_file = joinpath(target_dir,"grid_export.json")
+export_file = joinpath(target_dir, "grid_export.json")
 mkpath(target_dir)
 
 write_powergrid(grid, export_file, Json)
@@ -41,5 +96,11 @@ grid = read_powergrid(export_file, Json)
 @test grid.lines == expected_lines
 
 
-@test_throws ArgumentError read_powergrid(joinpath(@__DIR__, "grid_with_invalid_type.json"), Json)
-@test_throws UndefKeywordError read_powergrid(joinpath(@__DIR__, "grid_with_invalid_params.json"), Json)
+@test_throws ArgumentError read_powergrid(
+    joinpath(@__DIR__, "grid_with_invalid_type.json"),
+    Json,
+)
+@test_throws UndefKeywordError read_powergrid(
+    joinpath(@__DIR__, "grid_with_invalid_params.json"),
+    Json,
+)