diff --git a/user-doc/Installation.txt b/user-doc/Installation.txt
index d677edbf6b8695722e32e288ab3fe6f10370dbfb..92ae62c2c48a564b4648a14e83c561ee000d1a3d 100644
--- a/user-doc/Installation.txt
+++ b/user-doc/Installation.txt
@@ -662,7 +662,8 @@ ld: TOC section size exceeds 64k
 ./configure --disable-ld-r
 \endverbatim
 - On Cray machines, you might have to set the following environment variable
-  before configuring and building PLUMED (reported by Marco De La Pierre):
+  before configuring and building both PLUMED and the MD code that you want
+  to patch with PLUMED (kindly reported by Marco De La Pierre):
 \verbatim
 export CRAYPE_LINK_TYPE=dynamic
 \endverbatim