diff --git a/quarkus/extensions/src/main/java/org/keycloak/provider/quarkus/QuarkusCacheManagerProvider.java b/quarkus/extensions/src/main/java/org/keycloak/provider/quarkus/QuarkusCacheManagerProvider.java
index f86f0b9f87..182f5edf7e 100644
--- a/quarkus/extensions/src/main/java/org/keycloak/provider/quarkus/QuarkusCacheManagerProvider.java
+++ b/quarkus/extensions/src/main/java/org/keycloak/provider/quarkus/QuarkusCacheManagerProvider.java
@@ -77,7 +77,7 @@ public final class QuarkusCacheManagerProvider implements ManagedCacheManagerPro
     }
 
     private InputStream loadDefaultConfiguration(Config.Scope config) throws FileNotFoundException {
-        if (config.getBoolean("clustered")) {
+        if (config.getBoolean("clustered", false)) {
             log.debugf("Using default clustered cache configuration.");
             return FileLookupFactory.newInstance()
                     .lookupFileStrict("default-clustered-cache.xml", Thread.currentThread().getContextClassLoader());