diff --git a/src/TaylorTest.jl b/src/TaylorTest.jl
index 13ed8a1..474797b 100644
--- a/src/TaylorTest.jl
+++ b/src/TaylorTest.jl
@@ -28,9 +28,8 @@ true
 function check(f, Jf, x, constant_components::Vector{Int}=Int[]; taylortestplot::Bool=false, taylortestdirection=nothing, f_kwargs...)
   if isnothing(taylortestdirection)
     direction = 2 * (rand(size(x)...) .- 0.5)
-    for cst in constant_components
-      direction[cst] = 0
-    end
+
+    direction[constant_components] .= 0
 
     if direction isa Array
       direction ./= norm(direction)