diff --git a/src/calibre/utils/unsmarten.py b/src/calibre/utils/unsmarten.py
index 6f0c2a19e1..93064be7ab 100644
--- a/src/calibre/utils/unsmarten.py
+++ b/src/calibre/utils/unsmarten.py
@@ -20,12 +20,15 @@ _mreplace = MReplace({
         '…': '...',
         '“': '"',
         '”': '"',
+        '„': '"',
         '″': '"',
         '“': '"',
         '”': '"',
+        '„': '"',
         '″': '"',
         '“':'"',
         '”':'"',
+        '„':'"',
         '″':'"',
         '‘':"'",
         '’':"'",