diff --git a/r.html.markdown b/r.html.markdown
index fbc87b0e..b7bd6801 100644
--- a/r.html.markdown
+++ b/r.html.markdown
@@ -2,7 +2,6 @@
 language: R
 contributors:
     - ["e99n09", "http://github.com/e99n09"]
-    - ["isomorphismes", "http://twitter.com/isomorphisms"]    
 filename: learnr.r
 ---