diff --git a/lldb/test/lldbtest.py b/lldb/test/lldbtest.py
index 0072df6fb0a5..e11bd01fede0 100644
--- a/lldb/test/lldbtest.py
+++ b/lldb/test/lldbtest.py
@@ -362,8 +362,8 @@ def system(commands, **kwargs):
             print >> sbuf
             print >> sbuf, "os command:", shellCommand
             print >> sbuf, "with pid:", pid
-            print >> sbuf, "stdout:", output
-            print >> sbuf, "stderr:", error
+            print >> sbuf, "stdout:", this_output
+            print >> sbuf, "stderr:", this_error
             print >> sbuf, "retcode:", retcode
             print >> sbuf