diff --git a/react-slideshow/src/rand.js b/react-slideshow/src/rand.js
index 2d2344d..c52754d 100644
--- a/react-slideshow/src/rand.js
+++ b/react-slideshow/src/rand.js
@@ -22,7 +22,7 @@ Random.prototype.next = function () {
 /**
  * Returns a pseudo-random floating point number in range [0, 1).
  */
-Random.prototype.nextFloat = function (opt_minOrMax, opt_max) {
+Random.prototype.nextFloat = function () {
   // We know that result of next() will be 1 to 2147483646 (inclusive).
   return (this.next() - 1) / 2147483646;
 };