diff --git a/test/diffKernel.jl b/test/diffKernel.jl
index dad313e82..d17c1cbc3 100644
--- a/test/diffKernel.jl
+++ b/test/diffKernel.jl
@@ -1,25 +1,25 @@
 @testset "diffKernel" begin
-	@testset "smoke test" begin
-		k = MaternKernel()
-		k(1,1)
-		k(1, DiffPt(1, partial=(1,1))) # Cov(Z(x), ∂₁∂₁Z(y)) where x=1, y=1
-		k(DiffPt([1], partial=1), [2]) # Cov(∂₁Z(x), Z(y)) where x=[1], y=[2]
-		k(DiffPt([1,2], partial=(1)), DiffPt([1,2], partial=2))# Cov(∂₁Z(x), ∂₂Z(y)) where x=[1,2], y=[1,2]
-	end
+    @testset "smoke test" begin
+        k = MaternKernel()
+        k(1, 1)
+        k(1, DiffPt(1; partial=(1, 1))) # Cov(Z(x), ∂₁∂₁Z(y)) where x=1, y=1
+        k(DiffPt([1]; partial=1), [2]) # Cov(∂₁Z(x), Z(y)) where x=[1], y=[2]
+        k(DiffPt([1, 2]; partial=(1)), DiffPt([1, 2]; partial=2))# Cov(∂₁Z(x), ∂₂Z(y)) where x=[1,2], y=[1,2]
+    end
 
-	@testset "Sanity Checks with $k" for k in [SEKernel()]
-		for x in [0, 1, -1, 42]
-			# for stationary kernels Cov(∂Z(x) , Z(x)) = 0
-			@test k(DiffPt(x, partial=1), x) ≈ 0
+    @testset "Sanity Checks with $k" for k in [SEKernel()]
+        for x in [0, 1, -1, 42]
+            # for stationary kernels Cov(∂Z(x) , Z(x)) = 0
+            @test k(DiffPt(x; partial=1), x) ≈ 0
 
-			# the slope should be positively correlated with a point further down
-			@test k(
-				DiffPt(x, partial=1), # slope
-				x + 1e-1 # point further down
-			) > 0 
+            # the slope should be positively correlated with a point further down
+            @test k(
+                DiffPt(x; partial=1), # slope
+                x + 1e-1, # point further down
+            ) > 0
 
-			# correlation with self should be positive
-			@test k(DiffPt(x, partial=1), DiffPt(x, partial=1)) > 0
-		end
-	end
+            # correlation with self should be positive
+            @test k(DiffPt(x; partial=1), DiffPt(x; partial=1)) > 0
+        end
+    end
 end