diff --git a/centos/SPECS/polemarch.spec b/centos/SPECS/polemarch.spec
index 4072664..9acad6b 100644
--- a/centos/SPECS/polemarch.spec
+++ b/centos/SPECS/polemarch.spec
@@ -10,7 +10,7 @@
 %global __arch_install_post   /usr/lib/rpm/check-buildroot
 
 # Macros
-%define pyversion 3.8
+%define pyversion /usr/bin/python3.8
 %define name polemarch
 %define shortname polemarch
 %define namebase polemarch
@@ -87,8 +87,9 @@ exit 0
 
 %post
 %systemd_post %{name}.service
+update-alternatives --set python %{pyversion}
 sudo -u %{user} /opt/%{name}/bin/%{shortname}ctl migrate
-update-alternatives --set python /usr/bin/python3.8
+
 
 %preun
 %systemd_preun %{name}.service