diff --git a/package.json b/package.json
index 7180fd8..5ea7221 100644
--- a/package.json
+++ b/package.json
@@ -52,6 +52,7 @@
   "dependencies": {
     "classnames": "^2.2.1",
     "rc-tooltip": "3.x",
-    "rc-util": "3.x"
+    "rc-util": "3.x",
+    "warning": "^2.1.0"
   }
-}
+}
\ No newline at end of file
diff --git a/src/Steps.jsx b/src/Steps.jsx
index 5f33e7c..5b7a2b5 100644
--- a/src/Steps.jsx
+++ b/src/Steps.jsx
@@ -1,7 +1,9 @@
 import React from 'react';
 import classNames from 'classnames';
+import warning from 'warning';
 
 function calcPoints(vertical, marks, dots, step, min, max) {
+  warning(dots ? step : true, '`Slider[step]` should be a positive number in order to make Slider[dots] work.');
   const points = Object.keys(marks).map(parseFloat);
   if (dots) {
     for (let i = min; i <= max; i = i + step) {