diff --git a/filesystem.spec b/filesystem.spec
index 4e8ff93..e7901c4 100644
--- a/filesystem.spec
+++ b/filesystem.spec
@@ -2,7 +2,7 @@
 
 Name:          filesystem
 Version:       2.3
-Release:       9mamba
+Release:       10mamba
 Summary:       The basic directory layout for a Linux system
 Group:         System/Configuration
 Vendor:        openmamba
@@ -78,6 +78,35 @@ ln -s ../run %{buildroot}/var/run
 #%pre
 #[ -L /usr/local/man ] && rm -f /usr/local/man || :
 
+%pretrans -p <lua>
+-- Remove /usr/sbin early to avoid error due to package upgrade from owned dir to symlink
+path = "/usr/sbin"
+st = posix.stat(path)
+if st and st.type == "directory" then
+  status = os.rename(path, path .. ".rpmmoved")
+  if not status then
+    suffix = 0
+    while not status do
+      suffix = suffix + 1
+      status = os.rename(path .. ".rpmmoved", path .. ".rpmmoved." .. suffix)
+    end
+    os.rename(path, path .. ".rpmmoved")
+  end
+end
+path = "/usr/local/sbin"
+st = posix.stat(path)
+if st and st.type == "directory" then
+  status = os.rename(path, path .. ".rpmmoved")
+  if not status then
+    suffix = 0
+    while not status do
+      suffix = suffix + 1
+      status = os.rename(path .. ".rpmmoved", path .. ".rpmmoved." .. suffix)
+    end
+    os.rename(path, path .. ".rpmmoved")
+  end
+end
+
 %pre
 [ -L /var/run ] || {
    # /var/run -> /run migration
@@ -88,18 +117,18 @@ ln -s ../run %{buildroot}/var/run
    done
 }
 # /usr/sbin -> /usr/bin merge
-[ -L /usr/sbin ] || {
+[ -e /usr/sbin.rpmmoved ] && {
    echo "Migrating /usr/sbin to /usr/bin..."
    for d in /usr/sbin /usr/local/sbin; do
-      for f in $d/*; do 
-         dest=${d/sbin/bin}/`basename $f`
-         if [ -e $dest ]; then
+      for f in $d.rpmmoved/*; do 
+         dest="${d/sbin/bin}/`basename $f`"
+         if [ -e "$dest" ]; then
             #echo "$f exists as $dest"
             if [ -L $f ]; then
                linkdest=`readlink $f`
                #echo "$f is a symlink to $linkdest"
                /usr/bin/rm -f $f
-            elif [ -L $dest ]; then
+            elif [ -L "$dest" ]; then
                linkdest=`readlink $dest`
                #echo "$dest is a symlink to $linkdest"
                /usr/bin/rm -f $dest && mv $f $dest
@@ -108,7 +137,7 @@ ln -s ../run %{buildroot}/var/run
                /usr/bin/rm -f $f
             fi
          else
-            if [ -L $f ]; then
+            if [ -L "$f" ]; then
                linkdest=`readlink $f`
                if [ "${linkdest:0:3}" = "../" ]; then
                   fulllinkdest=`readlink -f $f`
@@ -123,7 +152,7 @@ ln -s ../run %{buildroot}/var/run
             fi
          fi
       done
-      /usr/bin/rmdir $d || /usr/bin/mv $d $d.notmigrated
+      /usr/bin/rmdir $d.rpmmoved || /usr/bin/mv $d.rpmmoved $d.notmigrated
       /usr/bin/ln -s bin $d
    done
 }
@@ -295,6 +324,9 @@ fi
 /usr/tmp
 
 %changelog
+* Tue Sep 05 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 2.3-10mamba
+- attempt to solve /usr/sbin upgrade error when owning directory to symlink 
+
 * Mon Sep 04 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 2.3-9mamba
 - own lib and lib64 dirs and symlinks