diff --git a/bootstrap-number-input.js b/bootstrap-number-input.js
index b1c7159..000abb6 100644
--- a/bootstrap-number-input.js
+++ b/bootstrap-number-input.js
@@ -36,6 +36,7 @@
 
 			var min = self.attr('min');
 			var max = self.attr('max');
+			var step = parseInt(self.attr('step')) || 1;
 
 			function setText(n) {
 				if((min && n < min) || (max && n > max)) {
@@ -48,10 +49,10 @@
 
 			var group = $("<div class='input-group'></div>");
 			var down = $("<button type='button'>-</button>").attr('class', 'btn btn-' + settings.downClass).click(function() {
-				setText(parseInt(clone.val()) - 1);
+				setText(parseInt(clone.val()) - step);
 			});
 			var up = $("<button type='button'>+</button>").attr('class', 'btn btn-' + settings.upClass).click(function() {
-				setText(parseInt(clone.val()) + 1);
+				setText(parseInt(clone.val()) + step);
 			});
 			$("<span class='input-group-btn'></span>").append(down).appendTo(group);
 			clone.appendTo(group);