diff --git a/backend/src/main/java/edu/internet2/tier/shibboleth/admin/ui/configuration/SpringSecurityConfig.java b/backend/src/main/java/edu/internet2/tier/shibboleth/admin/ui/configuration/SpringSecurityConfig.java
index 2f6a82a82..ad34b277a 100644
--- a/backend/src/main/java/edu/internet2/tier/shibboleth/admin/ui/configuration/SpringSecurityConfig.java
+++ b/backend/src/main/java/edu/internet2/tier/shibboleth/admin/ui/configuration/SpringSecurityConfig.java
@@ -191,7 +191,9 @@ public WebSecurityCustomizer noAuthWebSecurityCustomizer() {
     }
 
     private HttpFirewall defaultFirewall() {
-        return new DefaultHttpFirewall();
+        DefaultHttpFirewall defaultFirewall = new DefaultHttpFirewall();
+        defaultFirewall.setAllowUrlEncodedSlash(true);
+        return defaultFirewall;
     }
 
     class SimpleAuthenticationProvider implements AuthenticationProvider {