diff --git a/data/blob.ttl b/data/blob.ttl
index 3d80507..b85db7c 100644
--- a/data/blob.ttl
+++ b/data/blob.ttl
@@ -3024,7 +3024,7 @@ prefix library: <dokk:library:>
     :type "PDF" .
 
 <dokk:blob:pdf/OWASP_Cheat_Sheets_(Woschek_2015).pdf>
-    :library library:OWASP_Cheat_Sheets_(Woschek_2015) ;
+    :library library:OWASP_Cheat_Sheets_\(Woschek_2015\) ;
     :primary_source "https://owasp.org/www-pdf-archive//OWASP_Cheatsheets_Book.pdf" ;
     :primary_source_retrieved "2023-10-14" ;
     :type "PDF" .
diff --git a/data/library.ttl b/data/library.ttl
index d5538ad..debbda1 100644
--- a/data/library.ttl
+++ b/data/library.ttl
@@ -2653,7 +2653,7 @@ prefix license: <dokk:license:>
     :license license:CC-BY-NC-ND-3.0 ;
     :author "John M. Anderies", "Marco A. Janssen" .
 
-:OWASP_Cheat_Sheets_(Woschek_2015)
+:OWASP_Cheat_Sheets_\(Woschek_2015\)
     :title "OWASP Cheat Sheets" ;
     :license license:CC-BY-SA-3.0 ;
     :author "Martin Woschek" .