diff --git a/upstart-jobs/apache-httpd/default.nix b/upstart-jobs/apache-httpd/default.nix
index 9afe278398c..5c93a674da1 100644
--- a/upstart-jobs/apache-httpd/default.nix
+++ b/upstart-jobs/apache-httpd/default.nix
@@ -3,6 +3,8 @@
 let
 
   cfg = config.services.httpd;
+
+  mainCfg = cfg;
   
   startingDependency = if config.services.gw6c.enable then "gw6c" else "network-interfaces";
 
@@ -16,6 +18,11 @@ let
     canonicalName =
       "http://${cfg.hostName}" +
       (if cfg.httpPort != 80 then ":${toString cfg.httpPort}" else "");
+
+    # Admin address: inherit from the main server if not specified for
+    # a virtual host.
+    adminAddr = if cfg.adminAddr != "" then cfg.adminAddr else mainCfg.adminAddr;
+
     serverConfig = cfg;
     fullConfig = config; # machine config
   };
diff --git a/upstart-jobs/apache-httpd/subversion.nix b/upstart-jobs/apache-httpd/subversion.nix
index 3d28d4850ae..d561cd4c652 100644
--- a/upstart-jobs/apache-httpd/subversion.nix
+++ b/upstart-jobs/apache-httpd/subversion.nix
@@ -13,7 +13,7 @@ let
   logDir = "${config.dataDir}/log";
   postCommitHook = "/var/run/current-system/sw/bin/svn-server-post-commit-hook";
   fsType = "fsfs";
-  adminAddr = serverInfo.serverConfig.adminAddr;
+  adminAddr = serverInfo.adminAddr;