diff --git a/nixos/modules/services/web-servers/tomcat.nix b/nixos/modules/services/web-servers/tomcat.nix
index d92ba72a8336..be54e9255c78 100644
--- a/nixos/modules/services/web-servers/tomcat.nix
+++ b/nixos/modules/services/web-servers/tomcat.nix
@@ -121,6 +121,11 @@ in
               type = types.str;
               description = "name of the virtualhost";
             };
+            aliases = mkOption {
+              type = types.listOf types.str;
+              description = "aliases of the virtualhost";
+              default = [];
+            };
             webapps = mkOption {
               type = types.listOf types.path;
               description = ''
@@ -220,10 +225,28 @@ in
 
         ${if cfg.serverXml != "" then ''
           cp -f ${pkgs.writeTextDir "server.xml" cfg.serverXml}/* ${cfg.baseDir}/conf/
-          '' else ''
-          # Create a modified server.xml which also includes all virtual hosts
-          sed -e "/<Engine name=\"Catalina\" defaultHost=\"localhost\">/a\  ${toString (map (virtualHost: ''<Host name=\"${virtualHost.name}\" appBase=\"virtualhosts/${virtualHost.name}/webapps\" unpackWARs=\"true\" autoDeploy=\"true\" xmlValidation=\"false\" xmlNamespaceAware=\"false\" >${if cfg.logPerVirtualHost then ''<Valve className=\"org.apache.catalina.valves.AccessLogValve\" directory=\"logs/${virtualHost.name}\"  prefix=\"${virtualHost.name}_access_log.\" pattern=\"combined\" resolveHosts=\"false\"/>'' else ""}</Host>'') cfg.virtualHosts)}" \
-                ${tomcat}/conf/server.xml > ${cfg.baseDir}/conf/server.xml
+        '' else
+          let
+            hostElementForVirtualHost = virtualHost: ''
+              <Host name="${virtualHost.name}" appBase="virtualhosts/${virtualHost.name}/webapps"
+                    unpackWARs="true" autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false">
+            '' + concatStrings (innerElementsForVirtualHost virtualHost) + ''
+              </Host>
+            '';
+            innerElementsForVirtualHost = virtualHost:
+              (map (alias: ''
+                <Alias>${alias}</Alias>
+              '') virtualHost.aliases)
+              ++ (optional cfg.logPerVirtualHost ''
+                <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs/${virtualHost.name}"
+                       prefix="${virtualHost.name}_access_log." pattern="combined" resolveHosts="false"/>
+              '');
+            hostElementsString = concatMapStringsSep "\n" hostElementForVirtualHost cfg.virtualHosts;
+            hostElementsSedString = replaceStrings ["\n"] ["\\\n"] hostElementsString;
+          in ''
+            # Create a modified server.xml which also includes all virtual hosts
+            sed -e "/<Engine name=\"Catalina\" defaultHost=\"localhost\">/a\\"${escapeShellArg hostElementsSedString} \
+                  ${tomcat}/conf/server.xml > ${cfg.baseDir}/conf/server.xml
           ''
         }
         ${optionalString (cfg.logDirs != []) ''