diff --git a/webapp/components/ImageUploader/ImageUploader.spec.js b/webapp/components/ImageUploader/ImageUploader.spec.js
index 600e489e0..537febac3 100644
--- a/webapp/components/ImageUploader/ImageUploader.spec.js
+++ b/webapp/components/ImageUploader/ImageUploader.spec.js
@@ -28,7 +28,7 @@ describe('ImageUploader.vue', () => {
       const message = 'File upload failed'
       const fileError = { status: 'error' }
       const unSupportedFileMessage =
-        'Please upload an image of file format : jpg , jpeg , png or gif'
+        'Please upload an image of file format : JPG , JPEG , PNG or GIF'
 
       it('shows an error toaster when verror is called', () => {
         wrapper.vm.onDropzoneError(fileError, message)
diff --git a/webapp/components/ImageUploader/ImageUploader.vue b/webapp/components/ImageUploader/ImageUploader.vue
index e1d85207a..d4f402e02 100644
--- a/webapp/components/ImageUploader/ImageUploader.vue
+++ b/webapp/components/ImageUploader/ImageUploader.vue
@@ -87,7 +87,7 @@ export default {
       if (supportedFormats.indexOf(file.type) < 0) {
         this.onUnSupportedFormat(
           'error',
-          'Please upload an image of file format : jpg , jpeg , png or gif',
+          this.$t('contribution.teaserImage.errors.unSupported-file-format'),
         )
         return
       }
diff --git a/webapp/locales/en.json b/webapp/locales/en.json
index d25a41b40..a2d1e686c 100644
--- a/webapp/locales/en.json
+++ b/webapp/locales/en.json
@@ -259,7 +259,10 @@
     "success": "Saved!",
     "teaserImage": {
       "cropperConfirm": "Confirm",
-      "supportedFormats": "Insert a picture of file format JPG , PNG or GIF"
+      "supportedFormats": "Insert a picture of file format JPG , PNG or GIF",
+      "errors" : {
+        "unSupported-file-format" : "Please upload an image of file format : JPG , JPEG , PNG or GIF"
+      }
     },
     "title": "Title"
   },