diff --git a/scripts/sanitycheck b/scripts/sanitycheck
index dd74a96f8a8..83f7323d05e 100755
--- a/scripts/sanitycheck
+++ b/scripts/sanitycheck
@@ -651,7 +651,7 @@ class DeviceHandler(Handler):
             # Just because ser_fileno has data doesn't mean an entire line
             # is available yet.
             if serial_line:
-                sl = serial_line.decode('utf-8', 'ignore')
+                sl = serial_line.decode('utf-8', 'ignore').lstrip()
                 logger.debug("DEVICE: {0}".format(sl.rstrip()))
 
                 log_out_fp.write(sl)