diff --git a/cd.sh b/cd.sh
index b7c7e02..11b2f2c 100644
--- a/cd.sh
+++ b/cd.sh
@@ -352,7 +352,8 @@ local variable="${1}"
     if [ "${variable}" ] ; then
         grep "^${variable}=" "/etc/os-release" \
         | sed "s|^${variable}=||" \
-        | sed "s|^\"\(.*\)\"$|\1|"
+        | sed "s|^\"\(.*\)\"$|\1|" \
+        | sed "s|^\([0-9]\+\)\..*|\1|"
     fi
 }
 
diff --git a/readme.md b/readme.md
index 51e54e5..a6d5328 100644
--- a/readme.md
+++ b/readme.md
@@ -39,4 +39,3 @@ from various CA, CI, OCI / OS.
 * first list working directory
 * integrate project repository cloning
 * override repository and framework locations
-* reduce operating system version to major