diff --git a/dialog/saveCarte.js b/dialog/saveCarte.js
index d980fc0..480f078 100644
--- a/dialog/saveCarte.js
+++ b/dialog/saveCarte.js
@@ -8,7 +8,7 @@ import StoryMap from '../StoryMap';
 import Carte from '../Carte'
 import md2html from '../md/md2html';
 import team from '../api/team';
-import { storyV4 }  from '../format/version/tov4'
+import { storyV4 }  from '../format/version/toV4'
 
 const html = `
 <ul>
diff --git a/format/Carte.js b/format/Carte.js
index edf4d89..d6719c8 100644
--- a/format/Carte.js
+++ b/format/Carte.js
@@ -3,7 +3,7 @@ import { fromLonLat, toLonLat } from 'ol/proj';
 import GeoportailFormat from './layer/Geoportail'
 import EdugeoFormat from './layer/Edugeo'
 import VectorStyleFormat from './layer/VectorStyle';
-import GeoImageFormat from './layer/Geoimage';
+import GeoImageFormat from './layer/GeoImage';
 import StatisticFormat from './layer/Statistic';
 import WMS from './layer/WMS';
 import WMTS from './layer/WMTS';
diff --git a/format/StoryMap.js b/format/StoryMap.js
index 14eab1a..5dd8874 100644
--- a/format/StoryMap.js
+++ b/format/StoryMap.js
@@ -1,4 +1,4 @@
-import { unByKey } from 'ol/observable';
+import { unByKey } from 'ol/Observable';
 import { fromLonLat } from 'ol/proj';
 import Carte from '../Carte';
 import BaseFormat from './Base';
diff --git a/format/layer/Statistic.js b/format/layer/Statistic.js
index 457ba6e..c9f45ba 100644
--- a/format/layer/Statistic.js
+++ b/format/layer/Statistic.js
@@ -2,7 +2,7 @@
   @author Jean-Marc VIGLINO jean-marc.viglino@ign.fr
 */
 import LayerFormat from './Layer';
-import VectorSource from 'ol/source/vector';
+import VectorSource from 'ol/source/Vector';
 import Feature from 'ol/Feature';
 import StatisticLayer from '../../layer/Statistic'
 import GeoJSONXFormat from 'ol-ext/format/GeoJSONX'
diff --git a/format/version/version.js b/format/version/version.js
index 61d8199..4b0ca67 100644
--- a/format/version/version.js
+++ b/format/version/version.js
@@ -2,7 +2,7 @@
  * @description Convert to V4 format
  */
 
-import { carteV4 } from './tov4'
+import { carteV4 } from './toV4'
 import { carteGPF } from './toGPF'
 
 /** Update carte format