diff --git a/src/ol/ol.js b/src/ol/ol.js
index 614113f890..2af3b89101 100644
--- a/src/ol/ol.js
+++ b/src/ol/ol.js
@@ -73,7 +73,7 @@ ol.DRAGZOOM_ANIMATION_DURATION = 200;
 
 
 /**
- * @define {number} Hysterisis pixels.
+ * @define {number} Hysteresis pixels.
  */
 ol.DRAG_BOX_HYSTERESIS_PIXELS = 8;