diff --git a/src/layers/affine.jl b/src/layers/affine.jl
index 81fef977..0d6207da 100644
--- a/src/layers/affine.jl
+++ b/src/layers/affine.jl
@@ -10,11 +10,3 @@ end
 
 Affine(in::Integer, out::Integer; init = initn) =
   Affine(init(in, out), init(1, out))
-
-@net type Sigmoid
-  layer::Model
-  x -> σ(layer(x))
-end
-
-Sigmoid(in::Integer, out::Integer; init = randn) =
-  Sigmoid(Affine(in, out, init = init))