diff --git a/deluge/core/core.py b/deluge/core/core.py
index 9839af3df..4964980a2 100644
--- a/deluge/core/core.py
+++ b/deluge/core/core.py
@@ -89,7 +89,7 @@ class Core(
         if self.config["allow_remote"]:
             hostname = ""
         else:
-            hostname = "localhost"
+            hostname = "127.0.0.1"
 
         # Setup the xmlrpc server
         try:
diff --git a/deluge/ui/gtkui/connectionmanager.py b/deluge/ui/gtkui/connectionmanager.py
index 0273f568b..b028b7e09 100644
--- a/deluge/ui/gtkui/connectionmanager.py
+++ b/deluge/ui/gtkui/connectionmanager.py
@@ -333,7 +333,7 @@ class ConnectionManager(component.Component):
         online = True
         host = None
         try:
-            host = xmlrpclib.ServerProxy(uri)
+            host = xmlrpclib.ServerProxy(uri.replace("localhost", "127.0.0.1"))
             host.ping()
         except socket.error:
             online = False