diff --git a/product/ERP5Type/CachePlugins/DistributedRamCache.py b/product/ERP5Type/CachePlugins/DistributedRamCache.py
index c17f5a654a0a6b47afd0745fac070c3bf4b8ab8c..24d96616990c9f6e265de5dbdf589f9e0cc74b00 100644
--- a/product/ERP5Type/CachePlugins/DistributedRamCache.py
+++ b/product/ERP5Type/CachePlugins/DistributedRamCache.py
@@ -148,4 +148,4 @@ class DistributedRamCache(BaseCache):
 
   def getCachePluginTotalMemorySize(self):
     """ Calculate total RAM memory size of cache plugin. """
-    return 0    
+    return 0, {}