diff --git a/src/Core/Geographic/Extent.js b/src/Core/Geographic/Extent.js
index 9abdc051af..8c220fd34a 100644
--- a/src/Core/Geographic/Extent.js
+++ b/src/Core/Geographic/Extent.js
@@ -69,6 +69,8 @@ class Extent {
      * Extent is geographical bounding rectangle defined by 4 limits: west, east, south and north.
      * If crs is tiled projection (WMTS or TMS), the extent is defined by zoom, row and column.
      *
+     * Warning, using geocentric projection isn't consistent with geographical extent.
+     *
      * @param {String} crs projection of limit values.
      * @param {number|Array.<number>|Coordinates|Object} v0 west value, zoom
      * value, Array of values [west, east, south and north], Coordinates of
@@ -79,6 +81,10 @@ class Extent {
      * @param {number} [v3] north value
      */
     constructor(crs, v0, v1, v2, v3) {
+        if (CRS.isGeocentric(crs)) {
+            throw new Error(`${crs} is geocentric projection, it's not make sense with geographical extent`);
+        }
+
         this.isExtent = true;
         this.crs = crs;
         // Scale/zoom
diff --git a/test/unit/CameraUtils.js b/test/unit/CameraUtils.js
index c6d830e8a7..e5c4309303 100644
--- a/test/unit/CameraUtils.js
+++ b/test/unit/CameraUtils.js
@@ -6,6 +6,9 @@ import CameraUtils from 'Utils/CameraUtils';
 import DEMUtils from 'Utils/DEMUtils';
 import Camera, { CAMERA_TYPE } from 'Renderer/Camera';
 import Extent from 'Core/Geographic/Extent';
+import proj4 from 'proj4';
+
+proj4.defs('EPSG:2154', '+proj=lcc +lat_1=49 +lat_2=44 +lat_0=46.5 +lon_0=3 +x_0=700000 +y_0=6600000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs');
 
 function equalToFixed(value1, value2, toFixed) {
     return value1.toFixed(toFixed) === value2.toFixed(toFixed);
@@ -113,6 +116,7 @@ describe('Camera utils unit test', function () {
     it('should transform camera from given extent', function () {
         view.isPlanarView = true;
         view.isGlobeView = false;
+        view.referenceCrs = 'EPSG:2154';
         const orthographicCamera = new Camera(view.referenceCrs, 60, 40, { type: CAMERA_TYPE.ORTHOGRAPHIC });
         let camera3D = orthographicCamera.camera3D;
 
diff --git a/test/unit/extent.js b/test/unit/extent.js
index 6df627bf43..10bde54a48 100644
--- a/test/unit/extent.js
+++ b/test/unit/extent.js
@@ -60,7 +60,7 @@ describe('Extent', function () {
         const box = new Box3(
             new Vector3(Math.random(), Math.random()),
             new Vector3(Math.random(), Math.random()));
-        const fromBox = Extent.fromBox3('EPSG:4978', box);
+        const fromBox = Extent.fromBox3('EPSG:4326', box);
 
         assert.equal(fromBox.west, box.min.x);
         assert.equal(fromBox.east, box.max.x);
@@ -315,4 +315,8 @@ describe('Extent', function () {
         assert.equal(90, center.y);
         assert.equal(0, center.z);
     });
+
+    it('should throw error when instance with geocentric projection', () => {
+        assert.throws(() => new Extent('EPSG:4978'));
+    });
 });
diff --git a/test/unit/label.js b/test/unit/label.js
index 7007f043c3..785b608b4d 100644
--- a/test/unit/label.js
+++ b/test/unit/label.js
@@ -31,7 +31,7 @@ describe('LabelLayer', function () {
         geometry.closeSubGeometry(3, feature);
         geometry.properties = { content: 'foo' };
 
-        extent = new Extent('EPSG:4978', -10, 10, -10, 10);
+        extent = new Extent('EPSG:4326', -10, 10, -10, 10);
     });
 
     it('should create Labels from a FeatureCollection like object', function () {
@@ -43,7 +43,7 @@ describe('LabelLayer', function () {
 describe('Label', function () {
     let label;
     let style;
-    const c = new Coordinates('EPSG:4978');
+    const c = new Coordinates('EPSG:4326');
     const sprites = {
         img: '',
         icon: { x: 0, y: 0, width: 10, height: 10 },
diff --git a/test/unit/provider_url.js b/test/unit/provider_url.js
index 6a75ea5441..18b30d7e96 100644
--- a/test/unit/provider_url.js
+++ b/test/unit/provider_url.js
@@ -20,14 +20,6 @@ describe('URL creations', function () {
         assert.equal(result, 'http://server.geo/wmts/SERVICE=WMTS&TILEMATRIX=12&TILEROW=1410&TILECOL=2072');
     });
 
-    it('should correctly replace %bbox by 12,35,14,46', function () {
-        const extent = new Extent('EPSG:4978', 12, 14, 35, 46);
-        layer.crs = 'EPSG:4978';
-        layer.url = 'http://server.geo/wms/BBOX=%bbox&FORMAT=jpg&SERVICE=WMS';
-        const result = URLBuilder.bbox(extent, layer);
-        assert.equal(result, 'http://server.geo/wms/BBOX=12.00,35.00,14.00,46.00&FORMAT=jpg&SERVICE=WMS');
-    });
-
     it('should correctly replace %bbox by 12,14,35,46', function () {
         const extent = new Extent('EPSG:4326', 12, 14, 35, 46);
         layer.crs = 'EPSG:4326';