diff --git a/lib/compress.js b/lib/compress.js
index 3d9097e2..f4048991 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -156,7 +156,7 @@ merge(Compressor.prototype, {
                 value: val
             }).optimize(compressor);
           case "boolean":
-            return make_node(val ? AST_True : AST_False, orig);
+            return make_node(val ? AST_True : AST_False, orig).optimize(compressor);
           case "undefined":
             return make_node(AST_Undefined, orig).optimize(compressor);
           default: