diff --git a/GaussTuranExampleTemp/example.jl b/GaussTuranExampleTemp/example.jl
index c57dc44..2098d52 100644
--- a/GaussTuranExampleTemp/example.jl
+++ b/GaussTuranExampleTemp/example.jl
@@ -1,13 +1,13 @@
 using Optim
+using DoubleFloats
 using TaylorDiff
 using PreallocationTools
 using Integrals
-using DoubleFloats
 
 # This fix is needed to avoid crashing: https://github.com/JuliaLang/julia/pull/54201
 include("linear_algebra_fix.jl")
 
-FT = Float64 # Double64
+FT = Double64
 n = 5
 s = 1
 a = FT(0.0)
@@ -44,7 +44,7 @@ I = Integrals.GaussTuran(
 max_int_error_upper = maximum(abs(I(x -> f(x, j)) - I.cache.rhs_upper[j])
 for j in 1:(I.cache.N))
 @show max_int_error_upper
-# max_int_error_upper = 2.220446049250313e-16
+# max_int_error_upper = 2.465190328815662e-32
 
 # Integration error |I(fⱼ) - ₐ∫ᵇfⱼ(x)dx| last n functions fⱼ
 max_int_error_lower = maximum(
@@ -53,9 +53,9 @@ for
 j in (I.cache.N + 1):(I.cache.N + I.cache.n)
 )
 @show max_int_error_lower
-# max_int_error_lower = 2.0211055051788662e-12
+# max_int_error_lower = 9.079315240327527e-30
 
 # Example with eˣ
 exp_error = abs(I(Base.exp) - (Base.exp(1) - 1))
 @show exp_error;
-# exp_error = 1.5543122344752192e-15
+# exp_error = 6.43662141695295e-18
diff --git a/Project.toml b/Project.toml
index 25a276b..03e0ca0 100644
--- a/Project.toml
+++ b/Project.toml
@@ -32,8 +32,8 @@ IntegralsCubaExt = "Cuba"
 IntegralsCubatureExt = "Cubature"
 IntegralsFastGaussQuadratureExt = "FastGaussQuadrature"
 IntegralsForwardDiffExt = "ForwardDiff"
-IntegralsMCIntegrationExt = "MCIntegration"
 IntegralsGaussTuranExt = ["Optim", "TaylorDiff", "PreallocationTools"]
+IntegralsMCIntegrationExt = "MCIntegration"
 IntegralsZygoteExt = ["Zygote", "ChainRulesCore"]
 
 [compat]
diff --git a/ext/IntegralsGaussTuranExt.jl b/ext/IntegralsGaussTuranExt.jl
index b06e693..8b54e84 100644
--- a/ext/IntegralsGaussTuranExt.jl
+++ b/ext/IntegralsGaussTuranExt.jl
@@ -87,14 +87,14 @@ function GaussTuranLoss!(f, ΔX::AbstractVector{T}, cache) where {T}
     cumsum!(X, ΔX)
     X .+= a
 
-    # Evaluating f!
+    # Evaluating f
     for (i, x) in enumerate(X)
         # Threads.@threads for j = 1:N
         for j in 1:N
-            M_upper[j, i:n:N] .= derivatives(x -> f(x, j), x, one(T), Val(2s + 1)).value
+            M_upper[j, i:n:N] .= derivatives(x -> f(x, j), x, 1, Val(2s + 1)).value
         end
         Threads.@threads for j in (N + 1):(N + n)
-            M_lower[j - N, i:n:N] .= derivatives(x -> f(x, j), x, one(T), Val(2s + 1)).value
+            M_lower[j - N, i:n:N] .= derivatives(x -> f(x, j), x, 1, Val(2s + 1)).value
         end
     end