diff --git a/utils/finder.ts b/utils/finder.ts
index afaf6e5..4c7293d 100644
--- a/utils/finder.ts
+++ b/utils/finder.ts
@@ -8,22 +8,14 @@ import rangement_instance from '../conf/configs'
 import * as fs from "fs";
 import path from "node:path";
 import minimist from 'minimist';
+import {fileDestructuration, taggingCommand} from './interfaces';
 
 log.setLevel(rangement_instance.log_level)
 
-interface fileDestructuration {
-    fullPath: string
-    folderPath: string
-    fileNameOriginal: string
-    dateStampInFileNameOriginal: string
-    dateStampExif: string,
-    freeText: string,
-    tags: string[],
-    extension: string,
-}
 
 let cwd = path.dirname(process.cwd()) + '/' + path.basename(process.cwd())
 
+
 /**
  * finds patterns for file name
  */
@@ -81,7 +73,7 @@ export default class finder {
      * @param fullPath
      */
 
-    static guessFileNameOnOnefile(fullPath: string):void {
+    static guessFileNameOnOnefile(fullPath: string): void {
 
         log.info('go guess file name on file: ', fullPath)
         fs.stat(fullPath, (err, stats) => {
@@ -161,7 +153,7 @@ export default class finder {
         })
     }
 
-    static guessFileNameOnAllFilesFromArguments():void {
+    static guessFileNameOnAllFilesFromArguments(): void {
 
         // parcourir les fichiers
         log.debug('liste des fichiers', this.mini_arguments._)
@@ -212,6 +204,9 @@ export default class finder {
     static parseArguments() {
         this.mini_arguments = minimist(process.argv.slice(2))
         log.debug('arguments', this.mini_arguments)
+        if (!this.mini_arguments._.length) {
+            log.info('pas de fichier ou de dossier demandé, veuillez spécifier un chemin en argument')
+        }
     }
 
     static shouldWeChangeName(structureForFile: fileDestructuration) {
@@ -357,7 +352,7 @@ export default class finder {
      * @param tagCommand
      * @returns {{tagsToAdd: [], tagCommand: *, tagsToRemove: []}}
      */
-    static addOrRemoveTagsParsing(tagCommand: string): any {
+    static addOrRemoveTagsParsing(tagCommand: string): taggingCommand {
         let tagsToAdd: Array<any> = []
         let tagsToRemove: Array<any> = []
 
@@ -377,12 +372,15 @@ export default class finder {
     }
 
     static applyTagChangesOnProperties(tagChange: any, properties: fileDestructuration) {
-
-
+        // add new tags
         properties.tags = [...properties.tags, tagChange.tagsToAdd]
-        properties.tags.filter(elem => {
-            return tagChange.tagsToRemove.includes(elem)
+        properties.tags.forEach((elem, index) => {
+            if (tagChange.tagsToRemove.includes(elem)) {
+                delete properties.tags[index]
+            }
         })
+        properties.tags = [...new Set(properties.tags)];
+
         return properties
     }
 
diff --git a/utils/interfaces.ts b/utils/interfaces.ts
new file mode 100644
index 0000000..6db4fe6
--- /dev/null
+++ b/utils/interfaces.ts
@@ -0,0 +1,16 @@
+export interface fileDestructuration {
+    fullPath: string
+    folderPath: string
+    fileNameOriginal: string
+    dateStampInFileNameOriginal: string
+    dateStampExif: string,
+    freeText: string,
+    tags: string[],
+    extension: string,
+}
+
+export interface taggingCommand {
+    tagCommand: string,
+    tagsToAdd: Array<string>,
+    tagsToRemove: Array<string>
+}
\ No newline at end of file