diff --git a/README.md b/README.md
index bab297d48c3aafaea1e36677aee4cfeda5211def..261c996770ce11ab6546fcd7037e2d35ec8fce9f 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@
 
 ```
 cd icons/
-7z x FF*7z
+tar -xJf FF*xz
 cp -rf FF-Mogno ~/.icons/
 ```
 
@@ -28,7 +28,7 @@ cp -rf FF-Mogno ~/.icons/
 
 ```
 cd GTK/
-7z x FF*7z
+tar -xJf FF*xz
 cp -rf FF-Mogno ~/.themes/
 ```