diff --git a/Project.toml b/Project.toml
index eaca017..05aa6b7 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "PiecewiseLinearApprox"
 uuid = "fcfa6960-8e2e-11e9-2cde-29dd09221fb3"
 authors = ["Richard Dennis <richard.dennis@glasgow.ac.uk>"]
-version = "0.1.5"
+version = "0.1.6"
 
 [compat]
 julia = "^1.1"
diff --git a/src/piecewise_linear.jl b/src/piecewise_linear.jl
index 8106ea4..72c7c74 100644
--- a/src/piecewise_linear.jl
+++ b/src/piecewise_linear.jl
@@ -173,7 +173,7 @@ function piecewise_linear_evaluate(y::AbstractArray{T,N},x::Union{NTuple{N,Array
 
   for j = d:-1:1
 
-    new_data = zeros(Int(length(data)/2))
+    new_data = zeros(R,Int(length(data)/2))
     for i = 1:length(new_data)
       new_data[i] = data[2*(i-1)+1] + w[j]*(data[2*i]-data[2*(i-1)+1])
     end