diff --git a/doc/README.txt b/doc/README.txt
index be2c539..64fc9ce 100644
--- a/doc/README.txt
+++ b/doc/README.txt
@@ -46,7 +46,7 @@ Compiling on GNU/Linux:
 -----------------------
 
 Install dependencies. Here's an example for Debian/Ubuntu:
-$ apt-get install libirrlicht-dev cmake libbz2-dev libpng12-dev libjpeg8-dev libxxf86vm-dev
+$ apt-get install libirrlicht-dev cmake libbz2-dev libpng12-dev libjpeg8-dev libxxf86vm-dev libgl1-mesa-dev
 
 Download source, extract (this is the URL to the latest of source repository, which might not work at all times):
 $ wget https://bitbucket.org/celeron55/minetest/get/tip.tar.gz