diff --git a/lib/output.js b/lib/output.js
index 4a3bfd53..26f230af 100644
--- a/lib/output.js
+++ b/lib/output.js
@@ -456,7 +456,7 @@ function OutputStream(options) {
     PARENS(AST_Unary, function(output){
         var p = output.parent();
         return (p instanceof AST_PropAccess && p.expression === this)
-            || (p instanceof AST_Unary && p.operator == "+" && this.operator == "+");
+            || (p instanceof AST_Unary && p.operator == this.operator);
     });
 
     PARENS(AST_Seq, function(output){