diff --git a/src/components.jl b/src/components.jl
index f660a149..551fbee8 100644
--- a/src/components.jl
+++ b/src/components.jl
@@ -521,7 +521,7 @@ Base.Array(surf::Surface) = surf.surf
 for f in (:length, :size)
   @eval Base.$f(surf::Surface, args...) = $f(surf.surf, args...)
 end
-Base.copy(surf::Surface) = Surface{typeof(surf.surf)}(copy(surf.surf))
+Base.copy(surf::Surface) = Surface(copy(surf.surf))
 Base.eltype{T}(surf::Surface{T}) = eltype(T)
 
 function expand_extrema!(a::Axis, surf::Surface)