diff --git a/backend/src/main/java/edu/internet2/tier/shibboleth/admin/ui/configuration/ShibUIConfiguration.java b/backend/src/main/java/edu/internet2/tier/shibboleth/admin/ui/configuration/ShibUIConfiguration.java
index b109a83f4..fc20a0265 100644
--- a/backend/src/main/java/edu/internet2/tier/shibboleth/admin/ui/configuration/ShibUIConfiguration.java
+++ b/backend/src/main/java/edu/internet2/tier/shibboleth/admin/ui/configuration/ShibUIConfiguration.java
@@ -8,6 +8,7 @@
 
 import java.util.List;
 import java.util.Optional;
+import java.util.Set;
 
 @Configuration
 @ConfigurationProperties(prefix = "shibui")
@@ -38,5 +39,5 @@ public class ShibUIConfiguration {
     /**
      * A list of roles to bootstrap into the system.
      */
-    private List<String> roles;
+    private Set<String> roles;
 }