diff --git a/lib/prism/translation/parser.rb b/lib/prism/translation/parser.rb
index 7117643cdcd168..c9e4f148ce20b8 100644
--- a/lib/prism/translation/parser.rb
+++ b/lib/prism/translation/parser.rb
@@ -116,7 +116,7 @@ def unwrap(result, offset_cache)
           diagnostics.process(Diagnostic.new(error.message, :error, location))
         end
         result.warnings.each do |warning|
-          next unless valid_error?(warning)
+          next unless valid_warning?(warning)
 
           location = build_range(warning.location, offset_cache)
           diagnostics.process(Diagnostic.new(warning.message, :warning, location))