diff --git a/src/ol/index.js b/src/ol/index.js
index 746e7f26f0..7fedbfe2cb 100644
--- a/src/ol/index.js
+++ b/src/ol/index.js
@@ -62,13 +62,6 @@ export var ENABLE_WEBGL = true;
 export var DEBUG_WEBGL = true;
 
 
-/**
- * TODO: move this to MouseWheelZoom.js
- * @type {number} Maximum mouse wheel delta.
- */
-export var MOUSEWHEELZOOM_MAXDELTA = 1;
-
-
 /**
  * TODO: move this to OverviewMap.js
  * @type {number} Maximum width and/or height extent ratio that determines
@@ -234,7 +227,6 @@ export default {
   ENABLE_RASTER_REPROJECTION: ENABLE_RASTER_REPROJECTION,
   ENABLE_WEBGL: ENABLE_WEBGL,
   DEBUG_WEBGL: DEBUG_WEBGL,
-  MOUSEWHEELZOOM_MAXDELTA: MOUSEWHEELZOOM_MAXDELTA,
   OVERVIEWMAP_MAX_RATIO: OVERVIEWMAP_MAX_RATIO,
   OVERVIEWMAP_MIN_RATIO: OVERVIEWMAP_MIN_RATIO,
   RASTER_REPROJECTION_MAX_SUBDIVISION: RASTER_REPROJECTION_MAX_SUBDIVISION,
diff --git a/src/ol/interaction/MouseWheelZoom.js b/src/ol/interaction/MouseWheelZoom.js
index 16e16dc7cc..18d93663cc 100644
--- a/src/ol/interaction/MouseWheelZoom.js
+++ b/src/ol/interaction/MouseWheelZoom.js
@@ -1,7 +1,7 @@
 /**
  * @module ol/interaction/MouseWheelZoom
  */
-import {MOUSEWHEELZOOM_MAXDELTA, inherits} from '../index.js';
+import {inherits} from '../index.js';
 import _ol_ViewHint_ from '../ViewHint.js';
 import _ol_easing_ from '../easing.js';
 import _ol_events_EventType_ from '../events/EventType.js';
@@ -9,6 +9,13 @@ import _ol_has_ from '../has.js';
 import _ol_interaction_Interaction_ from '../interaction/Interaction.js';
 import _ol_math_ from '../math.js';
 
+
+/**
+ * @type {number} Maximum mouse wheel delta.
+ */
+var MAX_DELTA = 1;
+
+
 /**
  * @classdesc
  * Allows the user to zoom the map by scrolling the mouse wheel.
@@ -252,7 +259,7 @@ _ol_interaction_MouseWheelZoom_.prototype.handleWheelZoom_ = function(map) {
   if (view.getAnimating()) {
     view.cancelAnimations();
   }
-  var maxDelta = MOUSEWHEELZOOM_MAXDELTA;
+  var maxDelta = MAX_DELTA;
   var delta = _ol_math_.clamp(this.delta_, -maxDelta, maxDelta);
   _ol_interaction_Interaction_.zoomByDelta(view, -delta, this.lastAnchor_,
       this.duration_);