diff --git a/src/ol/rotationconstraint.js b/src/ol/rotationconstraint.js
index 820f6cf3c8..0f6e3d2dea 100644
--- a/src/ol/rotationconstraint.js
+++ b/src/ol/rotationconstraint.js
@@ -1,6 +1,8 @@
 goog.provide('ol.RotationConstraint');
 goog.provide('ol.RotationConstraintType');
 
+goog.require('goog.math');
+
 
 /**
  * @typedef {function((number|undefined), number): (number|undefined)}
@@ -50,7 +52,7 @@ ol.RotationConstraint.createSnapToN = function(n) {
  * @return {ol.RotationConstraintType} Rotation constraint.
  */
 ol.RotationConstraint.createSnapToZero = function(opt_tolerance) {
-  var tolerance = opt_tolerance || 0.1;
+  var tolerance = opt_tolerance || goog.math.toRadians(5);
   return (
       /**
        * @param {number|undefined} rotation Rotation.