diff --git a/lib/random/random.js b/lib/random/random.js
index 38e1034..403a59a 100644
--- a/lib/random/random.js
+++ b/lib/random/random.js
@@ -20,7 +20,7 @@ class random {
   }
 
   /**
-   * Returns an integer in [0, limit] (uniform distribution)
+   * Returns an integer in [0, limit) (uniform distribution)
    * @param {number} limit
    */
   static number (limit) {
@@ -42,7 +42,7 @@ class random {
   }
 
   /**
-   * Returns a float in [0, 1] (uniform distribution)
+   * Returns a float in [0, 1) (uniform distribution)
    */
   static float () {
     if (!random.twister) {
@@ -53,7 +53,7 @@ class random {
   }
 
   /**
-   * Returns an integer in [start, limit] (uniform distribution)
+   * Returns an integer in [start, limit) (uniform distribution)
    * @param {number} start
    * @param {number} limit
    */
@@ -61,15 +61,17 @@ class random {
     if (!random.twister) {
       throw new Error('random.init must be called first.')
     }
+
     if (isNaN(start) || isNaN(limit)) {
       logger.traceback()
       throw new TypeError(`random.range() received non-number type: (${start}, ${limit})`)
     }
+
     return random.number(limit - start + 1) + start
   }
 
   /**
-   * Returns a float in [1, limit]. The logarithm has uniform distribution.
+   * Returns a float in [1, limit). The logarithm has uniform distribution.
    * @param {number} limit
    */
   static ludOneTo (limit) {