diff --git a/src/ol/geom/MultiPolygon.js b/src/ol/geom/MultiPolygon.js
index 5fe7cd98e6..e395b8ece7 100644
--- a/src/ol/geom/MultiPolygon.js
+++ b/src/ol/geom/MultiPolygon.js
@@ -15,7 +15,7 @@ import _ol_geom_flat_closest_ from '../geom/flat/closest.js';
 import {linearRingssContainsXY} from '../geom/flat/contains.js';
 import {deflateMultiCoordinatesArray} from '../geom/flat/deflate.js';
 import {inflateMultiCoordinatesArray} from '../geom/flat/inflate.js';
-import _ol_geom_flat_interiorpoint_ from '../geom/flat/interiorpoint.js';
+import {getInteriorPointsOfMultiArray} from '../geom/flat/interiorpoint.js';
 import _ol_geom_flat_intersectsextent_ from '../geom/flat/intersectsextent.js';
 import _ol_geom_flat_orient_ from '../geom/flat/orient.js';
 import {quantizeMultiArray} from '../geom/flat/simplify.js';
@@ -209,7 +209,7 @@ MultiPolygon.prototype.getFlatInteriorPoints = function() {
   if (this.flatInteriorPointsRevision_ != this.getRevision()) {
     const flatCenters = linearRingssCenter(
       this.flatCoordinates, 0, this.endss_, this.stride);
-    this.flatInteriorPoints_ = _ol_geom_flat_interiorpoint_.linearRingss(
+    this.flatInteriorPoints_ = getInteriorPointsOfMultiArray(
       this.getOrientedFlatCoordinates(), 0, this.endss_, this.stride,
       flatCenters);
     this.flatInteriorPointsRevision_ = this.getRevision();
diff --git a/src/ol/geom/Polygon.js b/src/ol/geom/Polygon.js
index 55841b9ead..69a51017f1 100644
--- a/src/ol/geom/Polygon.js
+++ b/src/ol/geom/Polygon.js
@@ -15,7 +15,7 @@ import _ol_geom_flat_closest_ from '../geom/flat/closest.js';
 import {linearRingsContainsXY} from '../geom/flat/contains.js';
 import {deflateCoordinatesArray} from '../geom/flat/deflate.js';
 import {inflateCoordinatesArray} from '../geom/flat/inflate.js';
-import _ol_geom_flat_interiorpoint_ from '../geom/flat/interiorpoint.js';
+import {getInteriorPointOfArray} from '../geom/flat/interiorpoint.js';
 import _ol_geom_flat_intersectsextent_ from '../geom/flat/intersectsextent.js';
 import _ol_geom_flat_orient_ from '../geom/flat/orient.js';
 import {quantizeArray} from '../geom/flat/simplify.js';
@@ -198,7 +198,7 @@ Polygon.prototype.getEnds = function() {
 Polygon.prototype.getFlatInteriorPoint = function() {
   if (this.flatInteriorPointRevision_ != this.getRevision()) {
     const flatCenter = getCenter(this.getExtent());
-    this.flatInteriorPoint_ = _ol_geom_flat_interiorpoint_.linearRings(
+    this.flatInteriorPoint_ = getInteriorPointOfArray(
       this.getOrientedFlatCoordinates(), 0, this.ends_, this.stride,
       flatCenter, 0);
     this.flatInteriorPointRevision_ = this.getRevision();
diff --git a/src/ol/geom/flat/interiorpoint.js b/src/ol/geom/flat/interiorpoint.js
index 8045d4980a..98f4d56659 100644
--- a/src/ol/geom/flat/interiorpoint.js
+++ b/src/ol/geom/flat/interiorpoint.js
@@ -3,7 +3,6 @@
  */
 import {numberSafeCompareFunction} from '../../array.js';
 import {linearRingsContainsXY} from '../flat/contains.js';
-const _ol_geom_flat_interiorpoint_ = {};
 
 
 /**
@@ -19,7 +18,7 @@ const _ol_geom_flat_interiorpoint_ = {};
  * @return {Array.<number>} Destination point as XYM coordinate, where M is the
  * length of the horizontal intersection that the point belongs to.
  */
-_ol_geom_flat_interiorpoint_.linearRings = function(flatCoordinates, offset,
+export function getInteriorPointOfArray(flatCoordinates, offset,
   ends, stride, flatCenters, flatCentersOffset, opt_dest) {
   let i, ii, x, x1, x2, y1, y2;
   const y = flatCenters[flatCentersOffset + 1];
@@ -70,7 +69,7 @@ _ol_geom_flat_interiorpoint_.linearRings = function(flatCoordinates, offset,
   } else {
     return [pointX, y, maxSegmentLength];
   }
-};
+}
 
 
 /**
@@ -82,14 +81,13 @@ _ol_geom_flat_interiorpoint_.linearRings = function(flatCoordinates, offset,
  * @return {Array.<number>} Interior points as XYM coordinates, where M is the
  * length of the horizontal intersection that the point belongs to.
  */
-_ol_geom_flat_interiorpoint_.linearRingss = function(flatCoordinates, offset, endss, stride, flatCenters) {
+export function getInteriorPointsOfMultiArray(flatCoordinates, offset, endss, stride, flatCenters) {
   let interiorPoints = [];
   for (let i = 0, ii = endss.length; i < ii; ++i) {
     const ends = endss[i];
-    interiorPoints = _ol_geom_flat_interiorpoint_.linearRings(flatCoordinates,
+    interiorPoints = getInteriorPointOfArray(flatCoordinates,
       offset, ends, stride, flatCenters, 2 * i, interiorPoints);
     offset = ends[ends.length - 1];
   }
   return interiorPoints;
-};
-export default _ol_geom_flat_interiorpoint_;
+}
diff --git a/src/ol/render/Feature.js b/src/ol/render/Feature.js
index 369c65442c..f72aa7c40f 100644
--- a/src/ol/render/Feature.js
+++ b/src/ol/render/Feature.js
@@ -6,7 +6,7 @@ import {extend} from '../array.js';
 import {createOrUpdateFromCoordinate, createOrUpdateFromFlatCoordinates, getCenter, getHeight} from '../extent.js';
 import GeometryType from '../geom/GeometryType.js';
 import {linearRingss as linearRingssCenter} from '../geom/flat/center.js';
-import _ol_geom_flat_interiorpoint_ from '../geom/flat/interiorpoint.js';
+import {getInteriorPointOfArray, getInteriorPointsOfMultiArray} from '../geom/flat/interiorpoint.js';
 import _ol_geom_flat_interpolate_ from '../geom/flat/interpolate.js';
 import _ol_geom_flat_transform_ from '../geom/flat/transform.js';
 import _ol_transform_ from '../transform.js';
@@ -125,7 +125,7 @@ RenderFeature.prototype.getExtent = function() {
 RenderFeature.prototype.getFlatInteriorPoint = function() {
   if (!this.flatInteriorPoints_) {
     const flatCenter = getCenter(this.getExtent());
-    this.flatInteriorPoints_ = _ol_geom_flat_interiorpoint_.linearRings(
+    this.flatInteriorPoints_ = getInteriorPointOfArray(
       this.flatCoordinates_, 0, this.ends_, 2, flatCenter, 0);
   }
   return this.flatInteriorPoints_;
@@ -139,7 +139,7 @@ RenderFeature.prototype.getFlatInteriorPoints = function() {
   if (!this.flatInteriorPoints_) {
     const flatCenters = linearRingssCenter(
       this.flatCoordinates_, 0, this.ends_, 2);
-    this.flatInteriorPoints_ = _ol_geom_flat_interiorpoint_.linearRingss(
+    this.flatInteriorPoints_ = getInteriorPointsOfMultiArray(
       this.flatCoordinates_, 0, this.ends_, 2, flatCenters);
   }
   return this.flatInteriorPoints_;