diff --git a/ereuse_devicehub/static/js/main_inventory.build.js b/ereuse_devicehub/static/js/main_inventory.build.js
index 0f585c6d..16bb720a 100644
--- a/ereuse_devicehub/static/js/main_inventory.build.js
+++ b/ereuse_devicehub/static/js/main_inventory.build.js
@@ -251,9 +251,9 @@ function select_shift() {
     }
 
     if (e.shiftKey) {
-      var start = chkboxes.index(this);
-      var end = chkboxes.index(lastChecked);
-      chkboxes.slice(Math.min(start, end), Math.max(start, end) + 1).prop('checked', lastChecked.checked);
+      const start = chkboxes.index(this);
+      const end = chkboxes.index(lastChecked);
+      chkboxes.slice(Math.min(start, end), Math.max(start, end) + 1).prop("checked", lastChecked.checked);
     }
 
     lastChecked = this;
diff --git a/ereuse_devicehub/static/js/main_inventory.js b/ereuse_devicehub/static/js/main_inventory.js
index bab2e47a..a7ca9b7b 100644
--- a/ereuse_devicehub/static/js/main_inventory.js
+++ b/ereuse_devicehub/static/js/main_inventory.js
@@ -240,10 +240,10 @@ function select_shift() {
         }
 
         if (e.shiftKey) {
-            var start = chkboxes.index(this);
-            var end = chkboxes.index(lastChecked);
+            const start = chkboxes.index(this);
+            const end = chkboxes.index(lastChecked);
 
-            chkboxes.slice(Math.min(start,end), Math.max(start,end)+ 1).prop('checked', lastChecked.checked);
+            chkboxes.slice(Math.min(start,end), Math.max(start,end)+ 1).prop("checked", lastChecked.checked);
         }
 
         lastChecked = this;