diff --git a/bootstrap-slider.js b/bootstrap-slider.js
index 2191faf..ffea449 100644
--- a/bootstrap-slider.js
+++ b/bootstrap-slider.js
@@ -72,7 +72,7 @@
 		this.max = this.element.data('slider-max')||options.max;
 		this.step = this.element.data('slider-step')||options.step;
 		this.value = this.element.data('slider-value')||options.value;
-		if (this.value[1]) {
+		if (typeof this.value[1] !== 'undefined' && this.value[1] !== null) {
 			this.range = true;
 		}