diff --git a/README.md b/README.md
index 75a37bb..7115a7f 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ On Ubuntu system:
 $ sudo apt remove fprintd
 $ sudo add-apt-repository ppa:uunicorn/open-fprintd
 $ sudo aptget update
-$ sudo apt install open-fprintd fprintd-clients python3-validity
+$ sudo apt install open-fprintd fprintd-clients python-validity
 ...wait a bit...
 $ fprintd-enroll
 ```