diff --git a/src/utils.jl b/src/utils.jl
index afe926d9..bba3e416 100644
--- a/src/utils.jl
+++ b/src/utils.jl
@@ -4,8 +4,6 @@ initn(dims...) = randn(dims...)/100
 glorot_uniform(dims...) = (rand(dims...) - 0.5)*sqrt(24.0/(sum(dims)))
 glorot_normal(dims...) = (randn(dims...)*sqrt(2.0/sum(dims)))
 
-flatten(xs) = reshape(xs, size(xs, 1), :)
-
 unsqueeze(xs, dim) = reshape(xs, (size(xs)[1:dim-1]..., 1, size(xs)[dim:end]...))
 
 stack(xs, dim) = cat(dim, unsqueeze.(xs, dim)...)