diff --git a/migrate2rocky/README.md b/migrate2rocky/README.md
index ec2c168..dc0881a 100644
--- a/migrate2rocky/README.md
+++ b/migrate2rocky/README.md
@@ -30,6 +30,9 @@ base packages, the migration result will end in a corrupted system.
 
 This especially happens on systems configured with a centralized package management
 like Katello (RedHat Satellite 6) or Uyuni (RedHat Satellite 5, SUSE Manager).
+If one of these systems is configured it is possible to remove all projects/channels
+so the designated /etc/yum.repos.d/redhat.repo or
+/etc/yum.repos.d/susemanager:channels.repo file is empty or missing.
 
 #### RHEL migrations show error messages during conversion
 
diff --git a/migrate2rocky/migrate2rocky.sh b/migrate2rocky/migrate2rocky.sh
index de2dbce..a84a0f3 100644
--- a/migrate2rocky/migrate2rocky.sh
+++ b/migrate2rocky/migrate2rocky.sh
@@ -188,11 +188,11 @@ exit_clean () {
 }
 
 pre_check () {
-    if [[ -e /etc/yum.repos.d/redhat.repo ]]; then
-	exit_message "Migration from Katello-modified systems is not supported by migrate2rocky.\nPlease unconfigure all Katello configured repos, remove the /etc/yum.repos.d/redhat.repo file and re-enable the original repos."
+    if [[ -e /etc/rhsm/ca/katello-server-ca.pem ]] || [[ -s /etc/yum.repos.d/redhat.repo ]]; then
+	    exit_message "Migration from Katello-modified systems is not supported by migrate2rocky. See the README file for details."
     fi
-    if [[ -e /etc/yum.repos.d/susemanager\:channels.repo ]]; then
-    exit_message "Migration from Uyuni-modified systems is not supported by migrate2rocky.\nPlease unconfigure all Uyuni configured repos, remove the /etc/yum.repos.d/susemanager:channels.repo file and re-enable the original repos."
+    if [[ -e /etc/salt/minion.d/susemanager.conf ]] || [[ -s /etc/yum.repos.d/susemanager\:channels.repo ]]; then
+        exit_message "Migration from Uyuni/SUSE Manager-modified systems is not supported by migrate2rocky. See the README file for details."
     fi
 }