diff --git a/kfet/static/kfet/js/kpsul.js b/kfet/static/kfet/js/kpsul.js
index 05e3654c..b6f15b6d 100644
--- a/kfet/static/kfet/js/kpsul.js
+++ b/kfet/static/kfet/js/kpsul.js
@@ -45,7 +45,7 @@ class KPsulManager {
         var that = this ;
         $(this.history).on("cancel_done", function(e) {
             that.reset(true);
-            that.focus;
+            that.focus();
         });
     }
 
diff --git a/kfet/views.py b/kfet/views.py
index 57bef710..481c4967 100644
--- a/kfet/views.py
+++ b/kfet/views.py
@@ -1236,10 +1236,12 @@ def kpsul_cancel_operations(request):
     # Checking if BAD REQUEST (opes_pk not int or not existing)
     try:
         # Set pour virer les doublons
-        opes_post = set(map(lambda s: int(s),
-                            request.POST.getlist('opes[]', [])))
-        transfers_post = set(map(lambda s: int(s),
-                                 request.POST.getlist('transfers[]', [])))
+        opes_post = (
+            set(map(int, filter(None, request.POST.getlist('opes[]', []))))
+        )
+        transfers_post = (
+            set(map(int, filter(None, request.POST.getlist('transfers[]', []))))
+        )
     except ValueError:
         return JsonResponse(data, status=400)