diff --git a/documentation/installation/packages_debian_ubuntu.md b/documentation/installation/packages_debian_ubuntu.md
index 4be821c6..584b9504 100644
--- a/documentation/installation/packages_debian_ubuntu.md
+++ b/documentation/installation/packages_debian_ubuntu.md
@@ -8,8 +8,8 @@ redirect_from: "/documentation/installation/debian_ubuntu.html"
 
 At the moment we only support AMD64 binary packages:
 
-        # apt-key adv --keyserver hkp://pool.sks-keyservers.net --recv-keys 1AFDEA51
-        # wget https://swift.im/keys/packages.key | apt-key add -
+        $ apt-key adv --keyserver hkp://pool.sks-keyservers.net --recv-keys 1AFDEA51
+        $ curl https://swift.im/keys/packages.key | sudo apt-key add -
         # echo "deb http://packages.spectrum.im/spectrum2/ stretch main" >> /etc/apt/sources.list.d/spectrum.list
         # echo "deb https://swift.im/packages/debian/sid beta main" >> /etc/apt/sources.list.d/spectrum.list
         # apt-get update 
@@ -20,7 +20,8 @@ At the moment we only support AMD64 binary packages:
 
 You need to rebuild source libcommuni and spectrum packages from our source package repository:
 
-        $ apt-key adv --keyserver hkp://pool.sks-keyservers.net --recv-keys 1AFDEA51 
+        $ apt-key adv --keyserver hkp://pool.sks-keyservers.net --recv-keys 1AFDEA51
+        $ curl https://swift.im/keys/packages.key | sudo apt-key add -
         $ apt-get install devscripts fakeroot libssl-dev libqt4-dev
         $ echo "deb-src http://packages.spectrum.im/spectrum2/ stretch main" | sudo tee /etc/apt/sources.list.d/spectrum.list
         $ echo "deb http://swift.im/packages/debian/sid beta main" | sudo tee -a /etc/apt/sources.list.d/spectrum.list