diff --git a/src/ol/interaction/draw.js b/src/ol/interaction/draw.js
index e42a6f5274..735d74482e 100644
--- a/src/ol/interaction/draw.js
+++ b/src/ol/interaction/draw.js
@@ -127,7 +127,7 @@ ol.interaction.Draw = function(options) {
   if (!geometryFunction) {
     if (this.type_ === ol.geom.GeometryType.CIRCLE) {
       /**
-       * @param {ol.Coordinate|Array.<ol.Coordinate>|Array.<Array.<ol.Coordinate>>} coordinates
+       * @param {!Array.<ol.Coordinate>} coordinates
        *     The coordinates.
        * @param {ol.geom.SimpleGeometry=} opt_geometry Optional geometry.
        * @return {ol.geom.SimpleGeometry} A geometry.
@@ -151,7 +151,7 @@ ol.interaction.Draw = function(options) {
         Constructor = ol.geom.Polygon;
       }
       /**
-       * @param {ol.Coordinate|Array.<ol.Coordinate>|Array.<Array.<ol.Coordinate>>} coordinates
+       * @param {!Array.<ol.Coordinate>} coordinates
        *     The coordinates.
        * @param {ol.geom.SimpleGeometry=} opt_geometry Optional geometry.
        * @return {ol.geom.SimpleGeometry} A geometry.
@@ -529,9 +529,7 @@ ol.interaction.Draw.prototype.modifyDrawing_ = function(event) {
   }
   last[0] = coordinate[0];
   last[1] = coordinate[1];
-  this.geometryFunction_(
-      /** @type {!ol.Coordinate|!Array.<ol.Coordinate>|!Array.<Array.<ol.Coordinate>>} */ (this.sketchCoords_),
-      geometry);
+  this.geometryFunction_(/** @type {!Array.<ol.Coordinate>} */ (this.sketchCoords_), geometry);
   if (this.sketchPoint_) {
     var sketchPointGeom = /** @type {ol.geom.Point} */ (this.sketchPoint_.getGeometry());
     sketchPointGeom.setCoordinates(coordinate);
@@ -800,7 +798,7 @@ ol.interaction.Draw.createRegularPolygon = function(opt_sides, opt_angle) {
 ol.interaction.Draw.createBox = function() {
   return (
     /**
-     * @param {ol.Coordinate|Array.<ol.Coordinate>|Array.<Array.<ol.Coordinate>>} coordinates
+     * @param {Array.<ol.Coordinate>} coordinates
      * @param {ol.geom.SimpleGeometry=} opt_geometry
      * @return {ol.geom.SimpleGeometry}
      */
diff --git a/src/ol/typedefs.js b/src/ol/typedefs.js
index a0c7be7310..9d2be5fe1e 100644
--- a/src/ol/typedefs.js
+++ b/src/ol/typedefs.js
@@ -156,12 +156,11 @@ ol.DragBoxEndConditionType;
 
 
 /**
- * Function that takes coordinates and an optional existing geometry as
+ * Function that takes an array of coordinates and an optional existing geometry as
  * arguments, and returns a geometry. The optional existing geometry is the
  * geometry that is returned when the function is called without a second
  * argument.
- * @typedef {function(!(ol.Coordinate|Array.<ol.Coordinate>|
- *     Array.<Array.<ol.Coordinate>>), ol.geom.SimpleGeometry=):
+ * @typedef {function(!Array.<ol.Coordinate>, ol.geom.SimpleGeometry=):
  *     ol.geom.SimpleGeometry}
  */
 ol.DrawGeometryFunctionType;