diff --git a/changelogs/fragments/2614-influxdb_user-fix-issue-introduced-in-PR#2499.yml b/changelogs/fragments/2614-influxdb_user-fix-issue-introduced-in-PR#2499.yml
new file mode 100644
index 0000000000..dfae3f2bdf
--- /dev/null
+++ b/changelogs/fragments/2614-influxdb_user-fix-issue-introduced-in-PR#2499.yml
@@ -0,0 +1,2 @@
+bugfixes:
+  - influxdb_user - fix bug which removed current privileges instead of appending them to existing ones (https://github.com/ansible-collections/community.general/issues/2609, https://github.com/ansible-collections/community.general/pull/2614).
diff --git a/plugins/modules/database/influxdb/influxdb_user.py b/plugins/modules/database/influxdb/influxdb_user.py
index d9e6b58051..cb35ea7ce6 100644
--- a/plugins/modules/database/influxdb/influxdb_user.py
+++ b/plugins/modules/database/influxdb/influxdb_user.py
@@ -174,7 +174,7 @@ def set_user_grants(module, client, user_name, grants):
             if v['privilege'] != 'NO PRIVILEGES':
                 if v['privilege'] == 'ALL PRIVILEGES':
                     v['privilege'] = 'ALL'
-                parsed_grants.add(v)
+                parsed_grants.append(v)
 
         # check if the current grants are included in the desired ones
         for current_grant in parsed_grants: