diff --git a/src/lib/es5.d.ts b/src/lib/es5.d.ts
index 99acdcf8b8e..1be8d331a6f 100644
--- a/src/lib/es5.d.ts
+++ b/src/lib/es5.d.ts
@@ -682,8 +682,8 @@ interface Math {
     /** Returns a pseudorandom number between 0 and 1. */
     random(): number;
     /**
-     * Returns a supplied numeric expression rounded to the nearest number.
-     * @param x The value to be rounded to the nearest number.
+     * Returns a supplied numeric expression rounded to the nearest integer.
+     * @param x The value to be rounded to the nearest integer.
      */
     round(x: number): number;
     /**