diff --git a/test/test_ptdf.jl b/test/test_ptdf.jl
index 51e5c5a5..aeacd386 100644
--- a/test/test_ptdf.jl
+++ b/test/test_ptdf.jl
@@ -198,16 +198,15 @@ end
 
     bus_number = length(PNM.get_buses(sys))
 
-    dist_slack = 1/bus_number*ones(bus_number)
+    dist_slack = 1 / bus_number * ones(bus_number)
     slack_array = dist_slack / sum(dist_slack)
     slack_array = reshape(slack_array, 1, buscount)
 
-    P5_1 = PTDF(sys5; slack_array=slack_array, linear_solver = "KLU")
-    P5_2 = PTDF(sys5; slack_array=slack_array, linear_solver = "Dense")
-    P5_3 = PTDF(sys5; slack_array=slack_array, linear_solver = "MKLPardiso")
+    P5_1 = PTDF(sys5; slack_array = slack_array, linear_solver = "KLU")
+    P5_2 = PTDF(sys5; slack_array = slack_array, linear_solver = "Dense")
+    P5_3 = PTDF(sys5; slack_array = slack_array, linear_solver = "MKLPardiso")
 
-    @assert isapprox(P5_1.data, P5_2.data, atol=1e-5)
-    @assert isapprox(P5_1.data, P5_3.data, atol=1e-5)
-    @assert isapprox(P5_2.data, P5_3.data, atol=1e-5)
-
-end
\ No newline at end of file
+    @assert isapprox(P5_1.data, P5_2.data, atol = 1e-5)
+    @assert isapprox(P5_1.data, P5_3.data, atol = 1e-5)
+    @assert isapprox(P5_2.data, P5_3.data, atol = 1e-5)
+end