diff --git a/Control/AthenaBaseComps/src/AthHistogramAlgorithm.cxx b/Control/AthenaBaseComps/src/AthHistogramAlgorithm.cxx
index 2e9fd336431465edebda3e624b1eb1dac2face52..dbdb3798d05db55564dd17648acba2beed6bb4da 100644
--- a/Control/AthenaBaseComps/src/AthHistogramAlgorithm.cxx
+++ b/Control/AthenaBaseComps/src/AthHistogramAlgorithm.cxx
@@ -44,7 +44,7 @@ AthHistogramAlgorithm::AthHistogramAlgorithm( const std::string& name,
                   "ROOT objects to ROOT files" );
   //  declareProperty("THistService",      m_histSvc, "The THistSvc" );
   
-  declareProperty("RootStreamName",    m_prefix  = "/", "Name of the output ROOT stream (file) that the THistSvc uses");
+  declareProperty("RootStreamName",    m_prefix  = "/ANALYSIS", "Name of the output ROOT stream (file) that the THistSvc uses");
   declareProperty("RootDirName",       m_rootDir = "",
                   "Name of the ROOT directory inside the ROOT file where the histograms will go");
 
diff --git a/Control/AthenaBaseComps/src/AthHistogramFilterAlgorithm.cxx b/Control/AthenaBaseComps/src/AthHistogramFilterAlgorithm.cxx
index dc49753b528d7d1429f53b5576f52f172f2cf960..a3298420a3ff94b00db862a8a33c1941f3258060 100644
--- a/Control/AthenaBaseComps/src/AthHistogramFilterAlgorithm.cxx
+++ b/Control/AthenaBaseComps/src/AthHistogramFilterAlgorithm.cxx
@@ -43,7 +43,7 @@ AthHistogramFilterAlgorithm::AthHistogramFilterAlgorithm( const std::string& nam
                   "ROOT objects to ROOT files" );
 
   //declareProperty("THistService",      m_histSvc, "The THistSvc" );
-  declareProperty("RootStreamName",    m_prefix  = "/", "Name of the output ROOT stream (file) that the THistSvc uses");
+  declareProperty("RootStreamName",    m_prefix  = "/ANALYSIS", "Name of the output ROOT stream (file) that the THistSvc uses");
   declareProperty("RootDirName",       m_rootDir = "",
                   "Name of the ROOT directory inside the ROOT file where the histograms will go");
 
diff --git a/Control/AthenaBaseComps/src/AthHistogramTool.cxx b/Control/AthenaBaseComps/src/AthHistogramTool.cxx
index 9ef638090f9b4fd7f0468465385c1ae9664f9d07..707641e5233e9e98534471c6065a3d4e7a9726b0 100644
--- a/Control/AthenaBaseComps/src/AthHistogramTool.cxx
+++ b/Control/AthenaBaseComps/src/AthHistogramTool.cxx
@@ -41,7 +41,7 @@ AthHistogramTool::AthHistogramTool( const std::string& type,
                   "Handle to a THistSvc instance: it will be used to write "
                   "ROOT objects to ROOT files" );
 
-  declareProperty("RootStreamName",    m_prefix  = "/", "Name of the output ROOT stream (file) that the THistSvc uses");
+  declareProperty("RootStreamName",    m_prefix  = "/ANALYSIS", "Name of the output ROOT stream (file) that the THistSvc uses");
   declareProperty("RootDirName",       m_rootDir = "",
                   "Name of the ROOT directory inside the ROOT file where the histograms will go");