diff --git a/SAS/DataManagement/StorageQueryService/cache.py b/SAS/DataManagement/StorageQueryService/cache.py
index d73a3b9c99ca98e06b556376954210e6cfb047f6..f5da5b83c5f55ceb53e79ed21a1ffdf41939ed0b 100644
--- a/SAS/DataManagement/StorageQueryService/cache.py
+++ b/SAS/DataManagement/StorageQueryService/cache.py
@@ -428,6 +428,7 @@ class CacheManager:
                 if not self.disk_usage.path_resolver.pathExists(path):
                     result['message'] = 'No such path: %s' % path
 
+        result['disk_usage_readable'] = humanreadablesize(result['disk_usage'])
         logger.info('cache.getDiskUsageForPath result: %s' % result)
         return result