gistfile1.txt

diff --git a/src/compiler/scala/tools/nsc/typechecker/Macros.scala b/src/compiler/scala/tools/nsc/typechecker/Macros.scala
index 10aefae20b..1d09551244 100644
--- a/src/compiler/scala/tools/nsc/typechecker/Macros.scala
+++ b/src/compiler/scala/tools/nsc/typechecker/Macros.scala
@@ -471,7 +471,7 @@ trait Macros extends MacroRuntimes with Traces with Helpers {
                   if (prefix == EmptyTree) macroDef.owner.tpe else prefix.tpe,
                   macroDef.owner)
             } else
-              targ.tpe
+              binding.targs(paramPos).tpe
             context.WeakTypeTag(tpe)
           })
           macroLogVerbose(s"tags: $tags")