diff --git a/compile/interface/src/main/scala/xsbt/Compat.scala b/compile/interface/src/main/scala/xsbt/Compat.scala
index 1d38f6dec..3b007d252 100644
--- a/compile/interface/src/main/scala/xsbt/Compat.scala
+++ b/compile/interface/src/main/scala/xsbt/Compat.scala
@@ -86,6 +86,7 @@ abstract class Compat {
 
     def enclosingTopLevelClass: Symbol = sym.toplevelClass
     def toplevelClass: Symbol = sourceCompatibilityOnly
+    def isMacro: Boolean = false
   }
 
   val DummyValue = 0