diff --git a/support/testing/infra/basetest.py b/support/testing/infra/basetest.py
index 493dea5125..d6fcc619b1 100644
--- a/support/testing/infra/basetest.py
+++ b/support/testing/infra/basetest.py
@@ -42,9 +42,7 @@ class BRTest(unittest.TestCase):
         self.testname = self.__class__.__name__
         self.builddir = self.outputdir and os.path.join(self.outputdir, self.testname)
         self.emulator = None
-        self.config = '\n'.join([line.lstrip() for line in
-                                 self.config.splitlines()]) + '\n'
-        self.config += "BR2_JLEVEL={}\n".format(self.jlevel)
+        self.config += "\nBR2_JLEVEL={}\n".format(self.jlevel)
 
     def show_msg(self, msg):
         print "{} {:40s} {}".format(datetime.datetime.now().strftime("%H:%M:%S"),
diff --git a/support/testing/infra/builder.py b/support/testing/infra/builder.py
index 905b127c91..ef66b86113 100644
--- a/support/testing/infra/builder.py
+++ b/support/testing/infra/builder.py
@@ -6,7 +6,8 @@ import infra
 
 class Builder(object):
     def __init__(self, config, builddir, logtofile):
-        self.config = config
+        self.config = '\n'.join([line.lstrip() for line in
+                                 config.splitlines()]) + '\n'
         self.builddir = builddir
         self.logfile = infra.open_log_file(builddir, "build", logtofile)