diff --git a/lib/output.js b/lib/output.js
index a3b8f1a7..a3bd655a 100644
--- a/lib/output.js
+++ b/lib/output.js
@@ -95,6 +95,7 @@ function OutputStream(options) {
               case "\f": return "\\f";
               case "\n": return "\\n";
               case "\r": return "\\r";
+              case "\t": return "\\t";
               case "\u2028": return "\\u2028";
               case "\u2029": return "\\u2029";
               case '"': ++dq; return '"';