diff --git a/static/js/terminal/lib/cursor.js b/static/js/terminal/lib/cursor.js
index caedbf7..c45c4b1 100644
--- a/static/js/terminal/lib/cursor.js
+++ b/static/js/terminal/lib/cursor.js
@@ -46,11 +46,9 @@ module.exports = function (Terminal){
    * startBlink
    */
   Terminal.prototype.startBlink = function (){
-    if (this.cursor && this.cursorBlink) {
+    if (this.cursor && this.cursorBlink && !this._blink) {
       var context = this;
 
-      clearInterval(this._blink);
-
       this._blinker = function (){
         if (context._cursor) {
           context.cursorState ^= 1;