diff --git a/doc/xml/user-guide.xml b/doc/xml/user-guide.xml
index a37ccb08b..f87e663ac 100644
--- a/doc/xml/user-guide.xml
+++ b/doc/xml/user-guide.xml
@@ -381,8 +381,7 @@
             ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key
 
         # Install PGDG PostgreSQL repository
-        RUN rpm --import http://yum.postgresql.org/RPM-GPG-KEY-PGDG-10 && \
-            rpm -ivh https://download.postgresql.org/pub/repos/yum/reporpms/EL-8-x86_64/pgdg-redhat-repo-latest.noarch.rpm
+        RUN rpm -ivh https://download.postgresql.org/pub/repos/yum/reporpms/EL-8-x86_64/pgdg-redhat-repo-latest.noarch.rpm
 
         # Disable default PostgreSQL repository
         RUN command -v dnf >/dev/null 2>&1 && dnf -qy module disable postgresql || true