diff --git a/lib/6to5/generators/statements.js b/lib/6to5/generators/statements.js
index 8d00388636..b11a7b9868 100644
--- a/lib/6to5/generators/statements.js
+++ b/lib/6to5/generators/statements.js
@@ -14,6 +14,12 @@ exports.IfStatement = function (node, print) {
   print(node.test);
   this.push(") ");
   print(node.consequent);
+
+  if (node.alternate) {
+    if (this.isLast("}")) this.push(" ");
+    this.keyword("else");
+    print(node.alternate);
+  }
 };
 
 exports.BlockStatement = function (node, print) {