diff --git a/CHANGELOG.md b/CHANGELOG.md
index 12c7fc8e..a306f99f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ ml).
 - [fixed] #313 Bump numpy from 1.21.6 to 1.22.0.
 - [fixed] #314 bugs create placeholder from lot.
 - [fixed] #317 bugs about exports placeholders.
+- [fixed] #318 bugs about unlink tag of device.
 
 ## [2.3.0] - 2022-07-12
 - [added] #281 Add selenium test.
diff --git a/ereuse_devicehub/static/js/main_inventory.build.js b/ereuse_devicehub/static/js/main_inventory.build.js
index 1e1b21fd..7737a44c 100644
--- a/ereuse_devicehub/static/js/main_inventory.build.js
+++ b/ereuse_devicehub/static/js/main_inventory.build.js
@@ -216,7 +216,7 @@ function removeLot() {
 
 function removeTag() {
   const devices = TableController.getSelectedDevices();
-  const devices_id = devices.map(dev => dev.data);
+  const devices_id = devices.map(dev => $(dev).attr('data'));
 
   if (devices_id.length == 1) {
     const url = "/inventory/tag/devices/".concat(devices_id[0], "/del/");
@@ -228,7 +228,7 @@ function removeTag() {
 
 function addTag() {
   const devices = TableController.getSelectedDevices();
-  const devices_id = devices.map(dev => dev.data);
+  const devices_id = devices.map(dev => $(dev).attr('data'));
 
   if (devices_id.length == 1) {
     $("#addingTagModal .pol").hide();
diff --git a/ereuse_devicehub/static/js/main_inventory.js b/ereuse_devicehub/static/js/main_inventory.js
index 9c9b8d0a..d80d6c66 100644
--- a/ereuse_devicehub/static/js/main_inventory.js
+++ b/ereuse_devicehub/static/js/main_inventory.js
@@ -207,7 +207,7 @@ function removeLot() {
 
 function removeTag() {
     const devices = TableController.getSelectedDevices();
-    const devices_id = devices.map(dev => dev.data);
+    const devices_id = devices.map(dev => $(dev).attr("data"));
     if (devices_id.length == 1) {
         const url = `/inventory/tag/devices/${devices_id[0]}/del/`;
         window.location.href = url;
@@ -218,7 +218,7 @@ function removeTag() {
 
 function addTag() {
     const devices = TableController.getSelectedDevices();
-    const devices_id = devices.map(dev => dev.data);
+    const devices_id = devices.map(dev => $(dev).attr("data"));
     if (devices_id.length == 1) {
         $("#addingTagModal .pol").hide();
         $("#addingTagModal .btn-primary").show();