diff --git a/webapp/locales/de.json b/webapp/locales/de.json
index ac5320cfd..a28289f68 100644
--- a/webapp/locales/de.json
+++ b/webapp/locales/de.json
@@ -259,7 +259,10 @@
     "success": "Gespeichert!",
     "teaserImage": {
       "cropperConfirm": "Bestätigen",
-      "supportedFormats": "Füge ein Bild im Dateiformat JPG, PNG oder GIF ein"
+      "supportedFormats": "Füge ein Bild im Dateiformat JPG, PNG oder GIF ein",
+      "errors" : {
+        "unSupported-file-format" : "Bitte lade ein Bild in den folgenden Formaten hoch: JPG, JPEG, PNG or GIF!"
+      }
     },
     "title": "Titel"
   },
diff --git a/webapp/locales/en.json b/webapp/locales/en.json
index a2d1e686c..f929a804b 100644
--- a/webapp/locales/en.json
+++ b/webapp/locales/en.json
@@ -259,9 +259,9 @@
     "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"
+        "unSupported-file-format" : "Please upload an image of file format: JPG, JPEG, PNG or GIF!"
       }
     },
     "title": "Title"
diff --git a/webapp/locales/es.json b/webapp/locales/es.json
index 68c197ffe..6a510ae97 100644
--- a/webapp/locales/es.json
+++ b/webapp/locales/es.json
@@ -257,7 +257,7 @@
     "success": "¡Guardado!",
     "teaserImage": {
       "cropperConfirm": "Confirmar",
-      "supportedFormats": "Insertar una imagen de formato de archivo JPG, PNG o GIF"
+      "supportedFormats": "Insertar una imagen de formato de archivo JPG, PNG o GIF!"
     },
     "title": "Título"
   },
diff --git a/webapp/locales/fr.json b/webapp/locales/fr.json
index 04f0a80c8..410e95f36 100644
--- a/webapp/locales/fr.json
+++ b/webapp/locales/fr.json
@@ -257,7 +257,7 @@
     "success": "Enregistré!",
     "teaserImage": {
       "cropperConfirm": "Confirmer",
-      "supportedFormats": "Insérer une image au format de fichier JPG, PNG ou GIF"
+      "supportedFormats": "Insérer une image au format de fichier JPG, PNG ou GIF!"
     },
     "title": "Titre"
   },
diff --git a/webapp/locales/it.json b/webapp/locales/it.json
index 075bd89da..b18f1742a 100644
--- a/webapp/locales/it.json
+++ b/webapp/locales/it.json
@@ -262,7 +262,7 @@
     "success": "",
     "teaserImage": {
       "cropperConfirm": "Confermare",
-      "supportedFormats": "Inserisci un'immagine in formato file JPG, PNG o GIF"
+      "supportedFormats": "Inserisci un'immagine in formato file JPG, PNG o GIF!"
     },
     "title": ""
   },
diff --git a/webapp/locales/nl.json b/webapp/locales/nl.json
index ef6bc9c8e..2d00a1561 100644
--- a/webapp/locales/nl.json
+++ b/webapp/locales/nl.json
@@ -69,7 +69,7 @@
     "edit": "Bijdrage bewerken",
     "teaserImage": {
       "cropperConfirm": "Bevestigen",
-      "supportedFormats": "Voeg een afbeelding in met het bestandsformaat JPG, PNG of GIF"
+      "supportedFormats": "Voeg een afbeelding in met het bestandsformaat JPG, PNG of GIF!"
     }
   },
   "disable": {
diff --git a/webapp/locales/pl.json b/webapp/locales/pl.json
index 578d64914..ae6b927e3 100644
--- a/webapp/locales/pl.json
+++ b/webapp/locales/pl.json
@@ -120,7 +120,7 @@
     "success": "Zapisano!",
     "teaserImage": {
       "cropperConfirm": "Potwierdzać",
-      "supportedFormats": "Wstaw zdjęcie w formacie pliku JPG, PNG lub GIF"
+      "supportedFormats": "Wstaw zdjęcie w formacie pliku JPG, PNG lub GIF!"
     }
   },
   "delete": {
diff --git a/webapp/locales/pt.json b/webapp/locales/pt.json
index cf0eaba2a..74f1365c6 100644
--- a/webapp/locales/pt.json
+++ b/webapp/locales/pt.json
@@ -253,7 +253,7 @@
     "success": "Salvo!",
     "teaserImage": {
       "cropperConfirm": "Confirmar",
-      "supportedFormats": "Insira uma imagem do formato JPG, PNG ou GIF"
+      "supportedFormats": "Insira uma imagem do formato JPG, PNG ou GIF!"
     },
     "title": "Título"
   },
diff --git a/webapp/locales/ru.json b/webapp/locales/ru.json
index 0a1b21823..e57f4f125 100644
--- a/webapp/locales/ru.json
+++ b/webapp/locales/ru.json
@@ -257,7 +257,7 @@
     "success": "Сохранено!",
     "teaserImage": {
       "cropperConfirm": "Подтвердить",
-      "supportedFormats": "Вставьте изображение файла формата JPG, PNG или GIF"
+      "supportedFormats": "Вставьте изображение файла формата JPG, PNG или GIF!"
     },
     "title": "Заголовок"
   },