allow svg, but not tiff

diff --git a/librarian/formats/cover/evens/__init__.py b/librarian/formats/cover/evens/__init__.py
index 003807d..9081464 100644 (file)
--- a/librarian/formats/cover/evens/__init__.py
+++ b/librarian/formats/cover/evens/__init__.py
@@ -28,7 +28,7 @@ class EvensCover(Cover):
                 cover_url = ctx.files_path + urllib.quote(cover_url[7:])
             IMG_EXT = ('png', 'jpg', 'jpeg', 'gif')
             if '.' not in cover_url or cover_url.rsplit('.', 1)[1].lower() not in IMG_EXT:
-                raise BuildError('Wrong cover format, should be PNG, JPG or GIF')
+                raise BuildError('Wrong cover format, should be PNG, JPG, GIF or SVG')
             try:
                 self.background_img = urlopen(cover_url)
             except URLError: