diff --git a/more/free-programming-cheatsheets.md b/more/free-programming-cheatsheets.md
index 52fdc61a..08e9d8a7 100644
--- a/more/free-programming-cheatsheets.md
+++ b/more/free-programming-cheatsheets.md
@@ -173,6 +173,7 @@
 ### MongoDB
 
 * [MongoDB Cheat Sheet](https://www.mongodb.com/developer/quickstart/cheat-sheet) - MongoDB (HTML)
+* [MongoDB Cheat Sheet](https://blog.codecentric.de/files/2012/12/MongoDB-CheatSheet-v1_0.pdf) - codecentric (PDF)
 * [Quick Cheat Sheet for Mongo DB Shell commands](https://gist.github.com/michaeltreat/d3bdc989b54cff969df86484e091fd0c) - Michael Treat's Quick Cheat Sheet