diff --git a/README b/README
index 4d488dbae..55edc0ebe 100644
--- a/README
+++ b/README
@@ -23,9 +23,11 @@ $ git clone https://github.com/netblue30/firejail.git
 $ cd firejail
 $ ./configure && make && sudo make install-strip
 
-On Debian/Ubuntu you will need to install git and a compiler:
+On Debian/Ubuntu you will need to install git and gcc compiler. AppArmor
+development libraries and pkg-config are required when using --apparmor
+./configure option:
 
-$ sudo apt-get install build-essential
+$ sudo apt-get install git build-essential libapparmor-dev pkg-config
 
 
 
diff --git a/README.md b/README.md
index 46370e6a5..f0cecd1e7 100644
--- a/README.md
+++ b/README.md
@@ -45,9 +45,11 @@ $ git clone https://github.com/netblue30/firejail.git
 $ cd firejail
 $ ./configure && make && sudo make install-strip
 `````
-On Debian/Ubuntu you will need to install git and a compiler:
+On Debian/Ubuntu you will need to install git and gcc compiler. AppArmor
+development libraries and pkg-config are required when using --apparmor
+./configure option:
 `````
-$ sudo apt-get install git build-essential
+$ sudo apt-get install git build-essential libapparmor-dev pkg-config
 `````