diff --git a/cadcTomcat/src/ca/nrc/cadc/tomcat/CadcBasicAuthenticator.java b/cadcTomcat/src/ca/nrc/cadc/tomcat/CadcBasicAuthenticator.java
index c3845f91d7029e8135ca141b96e57cdcba2df056..5aedbbc2dfb1d4a4649b629145a0dac672969877 100644
--- a/cadcTomcat/src/ca/nrc/cadc/tomcat/CadcBasicAuthenticator.java
+++ b/cadcTomcat/src/ca/nrc/cadc/tomcat/CadcBasicAuthenticator.java
@@ -83,8 +83,6 @@ import org.apache.catalina.realm.RealmBase;
 import org.apache.log4j.Level;
 import org.apache.log4j.Logger;
 
-import ca.nrc.cadc.reg.Standards;
-
 /**
  * Custom class for Tomcat realm authentication.
  *
@@ -99,7 +97,7 @@ public class CadcBasicAuthenticator extends RealmBase
 {
 
     private static Logger log = Logger.getLogger(CadcBasicAuthenticator.class);
-    private static final String AC_URI = Standards.UMS_LOGIN_01.toString();
+    private static final String AC_URI = "ivo://ivoa.net/std/UMS#login-0.1";
 
     static
     {