diff --git a/src/tracker/array.jl b/src/tracker/array.jl
index 5b8ddd13..7111d780 100644
--- a/src/tracker/array.jl
+++ b/src/tracker/array.jl
@@ -276,20 +276,29 @@ LinearAlgebra.diagm(x::TrackedVector) = track(diagm, x)
 @grad diagm(x) = diagm(data(x)), Δ -> (diag(Δ),)
 
 x::TrackedMatrix  * y::AbstractMatrix = track(*, x, y)
-y::AbstractMatrix * x::TrackedMatrix  = track(*, x, y)
+x::AbstractMatrix * y::TrackedMatrix  = track(*, x, y)
 x::TrackedMatrix  * y::TrackedMatrix  = track(*, x, y)
 
 x::TrackedMatrix  * y::AbstractVector = track(*, x, y)
-y::AbstractMatrix * x::TrackedVector  = track(*, x, y)
+x::AbstractMatrix * y::TrackedVector  = track(*, x, y)
 x::TrackedMatrix  * y::TrackedVector  = track(*, x, y)
 
 x::TrackedVector  * y::AbstractVector = track(*, x, y)
-y::AbstractVector * x::TrackedVector  = track(*, x, y)
+x::AbstractVector * y::TrackedVector  = track(*, x, y)
 x::TrackedVector  * y::TrackedVector  = track(*, x, y)
 
 @grad a::AbstractMatrix * b::AbstractVecOrMat =
   data(a)*data(b), Δ -> (Δ * transpose(b), transpose(a) * Δ)
 
+# @grad function (a::AbstractMatrix * b::AbstractVecOrMat)
+#   # @show size(a) size(b)
+#   data(a)*data(b), function (Δ)
+#     @show size(Δ) size(b) size(Δ*transpose(b)) size(Δ*transpose(data(b)))
+#     @show typeof(Δ) typeof(b)
+#     (Δ * transpose(b), transpose(a) * Δ)
+#   end
+# end
+
 # NNlib
 
 using NNlib