diff --git a/lib/mix/lib/mix/utils.ex b/lib/mix/lib/mix/utils.ex
index 9af822f3b9..83c2ff4283 100644
--- a/lib/mix/lib/mix/utils.ex
+++ b/lib/mix/lib/mix/utils.ex
@@ -322,7 +322,11 @@ defmodule Mix.Utils do
     if File.exists?(source) do
       source_list = String.to_char_list!(source)
       case :file.read_link(target) do
-        { :ok, ^source_list } -> :ok
+        { :ok, ^source_list } ->
+          :ok
+        { :ok, _ } ->
+          File.rm!(target)
+          do_symlink_or_copy(source, target)
         { :error, :enoent } ->
           do_symlink_or_copy(source, target)
         { :error, _ } ->
diff --git a/lib/mix/test/mix/utils_test.exs b/lib/mix/test/mix/utils_test.exs
index 24320a840b..fa54f833a9 100644
--- a/lib/mix/test/mix/utils_test.exs
+++ b/lib/mix/test/mix/utils_test.exs
@@ -93,4 +93,13 @@ defmodule Mix.UtilsTest do
       assert :file.read_link("_build/archive/ebin") == { :ok, Path.expand('ebin') }
     end
   end
+
+  test :symlink_or_copy_erases_wrong_symblinks do
+    in_fixture "archive", fn ->
+      File.mkdir_p!("_build/archive")
+      Mix.Utils.symlink_or_copy(Path.expand("priv"), "_build/archive/ebin")
+      Mix.Utils.symlink_or_copy(Path.expand("ebin"), "_build/archive/ebin")
+      assert :file.read_link("_build/archive/ebin") == { :ok, Path.expand('ebin') }
+    end
+  end
 end