diff --git a/HsH-classes.dtx b/HsH-classes.dtx
index 7c8e2e836fab6b2c77ebf4891c81f4e83b6032d2..e2729f1d485aa275c6e5d02ce8ca073b26e7fab6 100644
--- a/HsH-classes.dtx
+++ b/HsH-classes.dtx
@@ -609,7 +609,7 @@
       Keywords={\@keywords}
     }
   }
-}
+}{}
 %% configs for optional packages:
 \@ifpackageloaded{biblatex}{
   \ExecuteBibliographyOptions{
diff --git a/src/config.tex b/src/config.tex
index f877076a075773beb9adaa3d05a884d668317a80..9b9ff9ed5ddf0cee55e4ac68f7d21a4afad34a01 100644
--- a/src/config.tex
+++ b/src/config.tex
@@ -8,7 +8,7 @@
       Keywords={\@keywords}
     }
   }
-}
+}{}
 %% configs for optional packages:
 \@ifpackageloaded{biblatex}{
   \ExecuteBibliographyOptions{