diff --git a/base/show.jl b/base/show.jl
index c2e21b84fd5c8a..01f0bec8bafb35 100644
--- a/base/show.jl
+++ b/base/show.jl
@@ -80,7 +80,7 @@ function show(io::IO, x::DataType)
     if isvarargtype(x)
         print(io, x.parameters[1], "...")
     else
-        print(io, x.name.name)
+        show(io, x.name)
         if length(x.parameters) > 0
             show_comma_array(io, x.parameters, '{', '}')
         end
@@ -103,7 +103,7 @@ macro show(exs...)
     return blk
 end
 
-show(io::IO, tn::TypeName) = print(io, tn.name)
+show(io::IO, tn::TypeName) = print(io, "$(tn.module).$(tn.name)")
 show(io::IO, ::Void) = print(io, "nothing")
 show(io::IO, b::Bool) = print(io, b ? "true" : "false")
 show(io::IO, n::Signed) = (write(io, dec(n)); nothing)