diff --git a/addons/web/static/src/js/view_form.js b/addons/web/static/src/js/view_form.js
index 906f1d8fe36..82bebb1fe87 100644
--- a/addons/web/static/src/js/view_form.js
+++ b/addons/web/static/src/js/view_form.js
@@ -5030,7 +5030,7 @@ instance.web.form.FieldOne2ManyBinaryMultiFiles = instance.web.form.AbstractFiel
             }
 
             // block UI or not
-            if(this.node.attrs.blockui) {
+            if(this.node.attrs.blockui>0) {
                 instance.web.blockUI();
             }
 
@@ -5064,7 +5064,7 @@ instance.web.form.FieldOne2ManyBinaryMultiFiles = instance.web.form.AbstractFiel
     },
     on_file_loaded: function (event, result) {
         // unblock UI
-        if(this.node.attrs.blockui) {
+        if(this.node.attrs.blockui>0) {
             instance.web.unblockUI();
         }