diff --git a/tools/ldb_tool.cc b/tools/ldb_tool.cc
index 2fef6660d..8d5ac068b 100644
--- a/tools/ldb_tool.cc
+++ b/tools/ldb_tool.cc
@@ -93,6 +93,7 @@ void LDBCommandRunner::PrintHelp(const LDBOptions& ldb_options,
   BatchPutCommand::Help(ret);
   ScanCommand::Help(ret);
   DeleteCommand::Help(ret);
+  SingleDeleteCommand::Help(ret);
   DeleteRangeCommand::Help(ret);
   DBQuerierCommand::Help(ret);
   ApproxSizeCommand::Help(ret);