diff --git a/lib/ruby-lint/runner.rb b/lib/ruby-lint/runner.rb
index <HASH>..<HASH> 100644
--- a/lib/ruby-lint/runner.rb
+++ b/lib/ruby-lint/runner.rb
@@ -112,7 +112,7 @@ module RubyLint
     #
     def report_diagnostic(diagnostic, report)
       report.add(
-        :level   => :error,
+        :level   => :warning,
         :message => diagnostic.message,
         :line    => diagnostic.location.line,
         :column  => diagnostic.location.column + 1,
Emit parser diagnostics as warnings.