diff --git a/core-macros/src/main/scala/sbt/internal/util/appmacro/ContextUtil.scala b/core-macros/src/main/scala/sbt/internal/util/appmacro/ContextUtil.scala
index 1a4658813..c29b0f6ec 100644
--- a/core-macros/src/main/scala/sbt/internal/util/appmacro/ContextUtil.scala
+++ b/core-macros/src/main/scala/sbt/internal/util/appmacro/ContextUtil.scala
@@ -321,7 +321,8 @@ final class ContextUtil[C <: blackbox.Context](val ctx: C) {
                 case _                                                      => Some(stat)
               }
             }
-            Block(stats, super.transform(expr0))
+            val expr = super.transform(expr0)
+            Block(stats, expr).setType(expr.tpe)
           case _ => super.transform(tree)
         }
     }