diff --git a/README.md b/README.md
index 632d0f0..950770b 100644
--- a/README.md
+++ b/README.md
@@ -15,4 +15,4 @@ To correlate the image-derived results with other medical data, such as demograp
 Documentation and Installation
 ------------------------------
 
-More information about the plugin and installation instructions, can be found in [documention.docx](https://github.com/evast/transmart-xnat-importer-plugin/blob/master/docs/documentation.pdf?raw=true) in the directory docs. A user-guide to import data with step-by-step instructions and screenshots can be found in the same document.
+More information about the plugin and installation instructions, can be found in [documention.pdf](https://github.com/evast/transmart-xnat-importer-plugin/blob/master/docs/documentation.pdf?raw=true) in the directory docs. A user-guide to import data with step-by-step instructions and screenshots can be found in the same document.