diff --git a/static/application.js b/static/application.js
index bf126f4..78d5e73 100644
--- a/static/application.js
+++ b/static/application.js
@@ -185,6 +185,7 @@ haste.prototype.newDocument = function(hideHistory) {
   this.$textarea.val('').show('fast', function() {
     this.focus();
   });
+  this.selectedLines = { startLine: null, endLine: null };
   this.removeLineNumbers();
 };