diff --git a/src/ol/typedefs.js b/src/ol/typedefs.js
index 6f56d9fe19..268aca9050 100644
--- a/src/ol/typedefs.js
+++ b/src/ol/typedefs.js
@@ -244,13 +244,6 @@ ol.EventsListenerFunctionType;
 ol.EventTargetLike;
 
 
-/**
- * An array of numbers representing an extent: `[minx, miny, maxx, maxy]`.
- * @typedef {Array.<number>}
- */
-ol.Extent;
-
-
 /**
  * {@link ol.source.Vector} sources use a function of this type to load
  * features.
diff --git a/src/ol/types.js b/src/ol/types.js
index d0d8b8ae0e..db1238c4c6 100644
--- a/src/ol/types.js
+++ b/src/ol/types.js
@@ -21,3 +21,9 @@
  * @property {string} type
  */
 
+/**
+ * An array of numbers representing an extent: `[minx, miny, maxx, maxy]`.
+ * @typedef {Array.<number>} Extent
+ * @api
+ */
+