diff --git a/docs/en_US/release_notes_3_0.rst b/docs/en_US/release_notes_3_0.rst
index 1a3a9eae7..b41bd37f0 100644
--- a/docs/en_US/release_notes_3_0.rst
+++ b/docs/en_US/release_notes_3_0.rst
@@ -114,4 +114,5 @@ Bug fixes
 | `Bug #3200 <https://redmine.postgresql.org/issues/3200>`_ - Ensure the host parameter is correctly pickup up from the service file
 | `Bug #3219 <https://redmine.postgresql.org/issues/3219>`_ - Update required ChromeDriver version for current versions of Chrome
 | `Bug #3226 <https://redmine.postgresql.org/issues/3226>`_ - Move the field error indicators in front of the affected fields so they don't obscure spinners or drop downs etc.
-| `Bug #3244 <https://redmine.postgresql.org/issues/3244>`_ - Show more granular timing info in the query tool history panel
\ No newline at end of file
+| `Bug #3244 <https://redmine.postgresql.org/issues/3244>`_ - Show more granular timing info in the query tool history panel
+| `Bug #3248 <https://redmine.postgresql.org/issues/3248>`_ - Ensure Alertify dialogues are modal to prevent them being closed by mis-click
\ No newline at end of file
diff --git a/web/pgadmin/static/js/alertify.pgadmin.defaults.js b/web/pgadmin/static/js/alertify.pgadmin.defaults.js
index d2c1591ba..0d754ceac 100644
--- a/web/pgadmin/static/js/alertify.pgadmin.defaults.js
+++ b/web/pgadmin/static/js/alertify.pgadmin.defaults.js
@@ -5,6 +5,7 @@ define([
   alertify.defaults.theme.ok = 'btn btn-primary';
   alertify.defaults.theme.cancel = 'btn btn-danger';
   alertify.defaults.theme.input = 'form-control';
+  alertify.defaults.closable = false;
   alertify.pgIframeDialog || alertify.dialog('pgIframeDialog', function() {
     var iframe;
     return {