diff --git a/db/dbcommands.cpp b/db/dbcommands.cpp
index 65585730df1c8..2ad71db064ce3 100644
--- a/db/dbcommands.cpp
+++ b/db/dbcommands.cpp
@@ -1694,6 +1694,7 @@ namespace mongo {
         }
         CmdSleep() : Command("sleep") { }
         bool run(const string& ns, BSONObj& cmdObj, int, string& errmsg, BSONObjBuilder& result, bool fromRepl) {
+            log() << "test only command sleep invoked" << endl;
             int secs = 100;
             if ( cmdObj["secs"].isNumber() )
                 secs = cmdObj["secs"].numberInt();