diff --git a/nova/conf/vnc.py b/nova/conf/vnc.py
index 87eb1031ce..c1a33e2293 100644
--- a/nova/conf/vnc.py
+++ b/nova/conf/vnc.py
@@ -56,7 +56,7 @@ Possible values:
   of supported keyboard layouts at ``/usr/share/qemu/keymaps``.
 """),
 
-    cfg.IPOpt(
+    cfg.StrOpt(
         'vncserver_listen',
         default='127.0.0.1',
         deprecated_group='DEFAULT',
@@ -65,7 +65,7 @@ The IP address on which an instance should listen to for incoming VNC
 connection requests on this node.
 """),
 
-    cfg.IPOpt(
+    cfg.StrOpt(
         'vncserver_proxyclient_address',
         default='127.0.0.1',
         deprecated_group='DEFAULT',
@@ -100,7 +100,7 @@ Related options:
 * novncproxy_port
 """),
 
-    cfg.IPOpt(
+    cfg.StrOpt(
         'xvpvncproxy_host',
         default='0.0.0.0',
         deprecated_group='DEFAULT',
@@ -169,7 +169,7 @@ Related options:
 ]
 
 CLI_OPTS = [
-    cfg.IPOpt(
+    cfg.StrOpt(
         'novncproxy_host',
         default='0.0.0.0',
         deprecated_group='DEFAULT',