X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/a0b7177b9e33d4d23dc7ba73040f4cb5f750b8f8..37e7d9e4f5de0efd1f2d1568d8a455905843cc80:/src/librarian/builders/epub.py?ds=inline

diff --git a/src/librarian/builders/epub.py b/src/librarian/builders/epub.py
index 167b8cd..4471e30 100644
--- a/src/librarian/builders/epub.py
+++ b/src/librarian/builders/epub.py
@@ -558,7 +558,8 @@ class EpubBuilder(Builder):
             ))
         ).text = str(m.url)
 
-        newp().text = 'Tekst opracowany na podstawie: ' + m.source_name
+        if m.source_name:
+            newp().text = 'Tekst opracowany na podstawie: ' + m.source_name
 
         newp().text = """
               Wydawca: