diff --git a/src/layers/conv.jl b/src/layers/conv.jl
index 5392dffc..99fc16f2 100644
--- a/src/layers/conv.jl
+++ b/src/layers/conv.jl
@@ -37,7 +37,7 @@ Conv(k::NTuple{N,Integer}, ch::Pair{<:Integer,<:Integer}, σ = identity;
 
 @treelike Conv
 
-function (c::Conv)(x)
+function (c::Conv)(x::AbstractArray)
   # TODO: breaks gpu broadcast :(
   # ndims(x) == ndims(c.weight)-1 && return squeezebatch(c(reshape(x, size(x)..., 1)))
   σ, b = c.σ, reshape(c.bias, map(_->1, c.stride)..., :, 1)
@@ -51,6 +51,12 @@ function Base.show(io::IO, l::Conv)
   print(io, ")")
 end
 
+(a::Conv{<:Any,<:Any,W})(x::AbstractArray{T}) where {T <: Union{Float32,Float64}, W <: AbstractArray{T}} =
+  invoke(a, Tuple{AbstractArray}, x)
+
+(a::Conv{<:Any,<:Any,W})(x::AbstractArray{<:Real}) where {T <: Union{Float32,Float64}, W <: AbstractArray{T}} =
+  a(T.(x))
+
 """
     DepthwiseConv(size, in)
     DepthwiseConv(size, in=>mul)