diff --git a/src/fast-path.js b/src/fast-path.js
index bcc19b50..634bdda6 100644
--- a/src/fast-path.js
+++ b/src/fast-path.js
@@ -239,6 +239,7 @@ FPp.needsParens = function(assumeExpressionContext) {
     case "LogicalExpression":
       switch (parent.type) {
         case "CallExpression":
+        case "NewExpression":
           return name === "callee" && parent.callee === node;
 
         case "UnaryExpression":
@@ -340,6 +341,7 @@ FPp.needsParens = function(assumeExpressionContext) {
         case "SpreadProperty":
         case "BinaryExpression":
         case "LogicalExpression":
+        case "NewExpression":
           return true;
 
         case "CallExpression":
diff --git a/tests/new_expression/__snapshots__/jsfmt.spec.js.snap b/tests/new_expression/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 00000000..b5988749
--- /dev/null
+++ b/tests/new_expression/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,8 @@
+exports[`test new_expression.js 1`] = `
+"new (memoize.Cache || MapCache)
+new (typeof this == \"function\" ? this : Dict())
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+new (memoize.Cache || MapCache)();
+new (typeof this == \"function\" ? this : Dict())();
+"
+`;
diff --git a/tests/new_expression/jsfmt.spec.js b/tests/new_expression/jsfmt.spec.js
new file mode 100644
index 00000000..989047bc
--- /dev/null
+++ b/tests/new_expression/jsfmt.spec.js
@@ -0,0 +1 @@
+run_spec(__dirname);
diff --git a/tests/new_expression/new_expression.js b/tests/new_expression/new_expression.js
new file mode 100644
index 00000000..23166585
--- /dev/null
+++ b/tests/new_expression/new_expression.js
@@ -0,0 +1,2 @@
+new (memoize.Cache || MapCache)
+new (typeof this == "function" ? this : Dict())