diff --git a/src/cuarray.jl b/src/cuarray.jl
index 987b9f370..4648cbfa8 100644
--- a/src/cuarray.jl
+++ b/src/cuarray.jl
@@ -88,11 +88,7 @@ end
 # Testing the CuArrays allocator: set Knet.cuallocator()=true to use this
 function KnetPtrCu(len::Int)
     c = CuArray{UInt8}(undef, len)
-    if :buf in fieldnames(CuArray)
-        p = convert(Cptr, convert(Int, c.buf.ptr)) # ver <= 1.2.1
-    else
-        p = convert(Cptr, convert(Int, c.ptr)) # ver >= 1.3.0
-    end
+    p = convert(Cptr, convert(UInt, Base.unsafe_convert(CuPtr{UInt8}, Base.cconvert(CuPtr{UInt8}, c))))
     kp = KnetPtr(p, len, gpu(), c)
     finalizer(freeKnetPtrCu, kp)
 end