diff --git a/home/user/.local/bin/t b/home/user/.local/bin/t
index 846d933..68ae9d5 100755
--- a/home/user/.local/bin/t
+++ b/home/user/.local/bin/t
@@ -10,7 +10,7 @@ readonly EXIT_SUCCESS=0
 readonly NOTES_DIR_BASE="${HOME}/.t"
 readonly NOTES_DIR="${NOTES_DIR_BASE}/${NS:-default}"
 
-TAB="$(printf '\t')"
+TAB="$(printf -- '\t')"
 readonly TAB
 
 
@@ -33,7 +33,7 @@ cmd_help() {
 
 
 NAMESPACES
-    t namespaces            # show namespaces
+    t namespaces             # show namespaces
     NS=work t a fix bug 211  # add note in workspace 'work'
     NS=work t                # show notes in workspace 'work'"
 }
@@ -56,7 +56,7 @@ show_notes_with_indexes() {
             note_lines="..."
         fi
 
-        printf "[%d]\t%s\t(%s)\n" "${index}" "$(basename "${note}")" "${note_lines}"
+        printf -- '[%d]\t%s\t(%s)\n' "${index}" "$(basename -- "${note}")" "${note_lines}"
         index="$((index+1))"
     done
 
@@ -132,7 +132,7 @@ cmd_show_namespaces() {
         for ns in $(find "${NOTES_DIR_BASE}/" -mindepth 1 -maxdepth 1 -type d | sort -n)
         do
             namespace_notes_count="$(find "${ns}" -type f | wc -l)"
-            printf "%s\t(%s)\n" "$(basename "${ns}")" "${namespace_notes_count}"
+            printf -- '%s\t(%s)\n' "$(basename "${ns}")" "${namespace_notes_count}"
         done
     ) | prettify
 }