diff --git a/lib/fog/openstack/requests/compute/add_security_group.rb b/lib/fog/openstack/requests/compute/add_security_group.rb
index 0f9b4dc00..a5e91e0a0 100644
--- a/lib/fog/openstack/requests/compute/add_security_group.rb
+++ b/lib/fog/openstack/requests/compute/add_security_group.rb
@@ -12,7 +12,7 @@ module Fog
 
       class Mock
 
-        def update_server(server_id, group_name)
+        def add_security_group(server_id, group_name)
           response = Excon::Response.new
           response.status = 200
           response
diff --git a/lib/fog/openstack/requests/compute/remove_security_group.rb b/lib/fog/openstack/requests/compute/remove_security_group.rb
index a9b7ae783..3c226f58f 100644
--- a/lib/fog/openstack/requests/compute/remove_security_group.rb
+++ b/lib/fog/openstack/requests/compute/remove_security_group.rb
@@ -12,7 +12,7 @@ module Fog
 
       class Mock
 
-        def update_server(server_id, group_name)
+        def remove_security_group(server_id, group_name)
           response = Excon::Response.new
           response.status = 200
           response