diff --git a/benchmarks/basic_commands.py b/benchmarks/basic_commands.py
index 8c6a39535a26c7a52b5ed6300dc539583077dd8f_YmVuY2htYXJrcy9iYXNpY19jb21tYW5kcy5weQ==..bb255de19b92f1b948a45b136b73bf97fb4ac801_YmVuY2htYXJrcy9iYXNpY19jb21tYW5kcy5weQ== 100644
--- a/benchmarks/basic_commands.py
+++ b/benchmarks/basic_commands.py
@@ -365,7 +365,7 @@
             '{}/'.format(src),
             dst,
         ]
-        self.check_output(cmd)
+        self.check_output(*cmd)
 
 
 class ExchangeTimeSuite(BaseExchangeTimeSuite):