diff --git a/lib/6to5/transformation/transformers/other/flow.js b/lib/6to5/transformation/transformers/other/flow.js
index 03da75ef41..1291ce2c32 100644
--- a/lib/6to5/transformation/transformers/other/flow.js
+++ b/lib/6to5/transformation/transformers/other/flow.js
@@ -5,7 +5,7 @@ exports.TypeCastExpression = function (node) {
 };
 
 exports.ImportDeclaration = function (node) {
-  if (node.type) this.remove();
+  if (node.isType) this.remove();
 };
 
 exports.ExportDeclaration = function (node) {