diff --git a/Library/Homebrew/utils.rb b/Library/Homebrew/utils.rb
index 0c36da2e17..268246ba8e 100644
--- a/Library/Homebrew/utils.rb
+++ b/Library/Homebrew/utils.rb
@@ -637,6 +637,7 @@ def migrate_legacy_keg_symlinks_if_necessary
       end
     end
     dst = HOMEBREW_LINKED_KEGS/name
+    dst.unlink if dst.exist?
     FileUtils.ln_sf(src.relative_path_from(dst.parent), dst)
   end
   FileUtils.rm_rf legacy_linked_kegs