diff --git a/src/spectator/mocks/stubs.cr b/src/spectator/mocks/stubs.cr
index 00677f8..04b8e10 100644
--- a/src/spectator/mocks/stubs.cr
+++ b/src/spectator/mocks/stubs.cr
@@ -40,7 +40,6 @@ module Spectator::Mocks
                      :super
                    end.id
         receiver = if receiver == :self.id
-                     original = :previous_def.id
                      "self."
                    else
                      ""