diff --git a/ChangeMirrors.sh b/ChangeMirrors.sh
index da888a76..45ea90aa 100755
--- a/ChangeMirrors.sh
+++ b/ChangeMirrors.sh
@@ -838,7 +838,7 @@ function collect_system_info() {
             esac
             ;;
         "${SYSTEM_FEDORA}")
-            if [[ "${SYSTEM_VERSION_NUMBER_MAJOR}" -lt 39 ]]; then
+            if [[ "${SYSTEM_VERSION_NUMBER}" -lt 39 ]]; then
                 SOURCE_BRANCH="fedora-archive"
             fi
             ;;