diff --git a/adapters/oidc/installed/src/main/java/org/keycloak/adapters/installed/KeycloakInstalled.java b/adapters/oidc/installed/src/main/java/org/keycloak/adapters/installed/KeycloakInstalled.java
index 34a439482c1..ca3c61b40f7 100644
--- a/adapters/oidc/installed/src/main/java/org/keycloak/adapters/installed/KeycloakInstalled.java
+++ b/adapters/oidc/installed/src/main/java/org/keycloak/adapters/installed/KeycloakInstalled.java
@@ -259,7 +259,7 @@ public class KeycloakInstalled {
 
         String redirectUri = String.format("http://%s:%s", getListenHostname(), callback.getLocalPort());
 
-        String logoutUrl = deployment.getLogoutUrl()
+        String logoutUrl = deployment.getLogoutUrl().clone()
                 .queryParam(OAuth2Constants.REDIRECT_URI, redirectUri)
                 .build().toString();