--- a/src/pyams_content/component/gallery/zmi/interfaces.py	Mon Sep 11 14:53:15 2017 +0200
+++ b/src/pyams_content/component/gallery/zmi/interfaces.py	Mon Sep 11 14:54:30 2017 +0200
@@ -18,7 +18,7 @@
 # import interfaces
 
 # import packages
-from pyams_file.schema import FileField
+from pyams_file.schema import ImageField
 from pyams_i18n.schema import I18nTextField
 from zope.interface import Interface
 from zope.schema import TextLine
@@ -26,6 +26,10 @@
 from pyams_content import _
 
 
+class IGalleryImagesView(Interface):
+    """Marker interface for gallery contents view"""
+
+
 class IGalleryImageAddFields(Interface):
     """Gallery image add fields"""
 
@@ -36,6 +40,6 @@
                                     description=_("Comments relatives to author's rights management"),
                                     required=False)
 
-    images_data = FileField(title=_("Images data"),
-                            description=_("You can upload a single file or choose to upload a whole ZIP archive"),
-                            required=False)
+    images_data = ImageField(title=_("Images data"),
+                             description=_("You can upload a single file or choose to upload a whole ZIP archive"),
+                             required=False)