diff --git a/webapp/src/edu/cornell/mannlib/vitro/webapp/auth/identifier/common/IsRootUser.java b/webapp/src/edu/cornell/mannlib/vitro/webapp/auth/identifier/common/IsRootUser.java
index a41c2ab04..01c47322e 100644
--- a/webapp/src/edu/cornell/mannlib/vitro/webapp/auth/identifier/common/IsRootUser.java
+++ b/webapp/src/edu/cornell/mannlib/vitro/webapp/auth/identifier/common/IsRootUser.java
@@ -9,10 +9,17 @@ import edu.cornell.mannlib.vitro.webapp.auth.identifier.IdentifierBundle;
  * The current user is a root user.
  */
 public class IsRootUser extends AbstractCommonIdentifier implements Identifier {
+	public static final IsRootUser INSTANCE = new IsRootUser();
+
 	public static boolean isRootUser(IdentifierBundle ids) {
 		return !getIdentifiersForClass(ids, IsRootUser.class).isEmpty();
 	}
-	
+
+	/** Enforce the singleton pattern. */
+	private IsRootUser() {
+		// Nothing to initialize.
+	}
+
 	@Override
 	public String toString() {
 		return "IsRootUser";