diff --git a/modules/luci-base/htdocs/luci-static/resources/ui.js b/modules/luci-base/htdocs/luci-static/resources/ui.js
index b7eff98d70..d58f9519a2 100644
--- a/modules/luci-base/htdocs/luci-static/resources/ui.js
+++ b/modules/luci-base/htdocs/luci-static/resources/ui.js
@@ -2685,8 +2685,9 @@ const UIRangeSlider = UIElement.extend({
 	 * @property {int} [max=100]
 	 * Specifies the maximum value of the range.
 	 *
-	 * @property {int} [step=1]
-	 * Specifies the step value of the range slider handle.
+	 * @property {string} [step=1]
+	 * Specifies the step value of the range slider handle. Use "any" for
+	 * arbitrary precision floating point numbers.
 	 *
 	 * @param {function} [calculate=null]
 	 * A function to invoke when the slider is adjusted by the user. The function