diff --git a/config/alfresco/caches.properties b/config/alfresco/caches.properties
index e6f7f3777f..8ab1b1e0d0 100644
--- a/config/alfresco/caches.properties
+++ b/config/alfresco/caches.properties
@@ -88,7 +88,7 @@ cache.contentUrlSharedCache.eviction-policy=LRU
 cache.contentUrlSharedCache.eviction-percentage=25
 cache.contentUrlSharedCache.merge-policy=hz.ADD_NEW_ENTRY
 
-cache.contentUrlMasterKeySharedCache.tx.maxItems=65000
+cache.contentUrlMasterKeySharedCache.tx.maxItems=50
 cache.contentUrlMasterKeySharedCache.maxItems=0
 cache.contentUrlMasterKeySharedCache.timeToLiveSeconds=0
 cache.contentUrlMasterKeySharedCache.maxIdleSeconds=0
diff --git a/config/alfresco/tx-cache-context.xml b/config/alfresco/tx-cache-context.xml
index 0f6f81038c..67aab6d0ac 100644
--- a/config/alfresco/tx-cache-context.xml
+++ b/config/alfresco/tx-cache-context.xml
@@ -84,7 +84,7 @@
          <value>org.alfresco.cache.contentUrlMasterKeyTransactionalCache</value>
       </property>
       <property name="maxCacheSize" value="${cache.contentUrlMasterKeySharedCache.tx.maxItems}" />
-      <property name="mutable" value="true" />
+      <property name="mutable" value="false" />
       <property name="allowEqualsChecks" value="false" />
       <property name="disableSharedCache" value="${system.cache.disableMutableSharedCaches}" />
    </bean>