diff --git a/bucklets/onos.bucklet b/bucklets/onos.bucklet
index 8f5a11b..d863db1 100644
--- a/bucklets/onos.bucklet
+++ b/bucklets/onos.bucklet
@@ -23,7 +23,8 @@
 
     if srcs:
         base = get_base_path()
-        files = '%s\n%s\n' % (name, base) + '\n'.join(['%s/%s' % (base, s) for s in srcs])
+        # module name; base filepath; files (line-separated); empty line (to signify end of stream)
+        files = '%s\n%s\n' % (name, base) + '\n'.join(['%s/%s' % (base, s) for s in srcs]) + '\n\n'
 
         genrule(
                 name = name + '-checkstyle-files',
@@ -45,6 +46,7 @@
                     '$(location //tools/build/conf:checkstyle-xml)',
                     '$(location //tools/build/conf:suppressions-xml)',
                     ],
+                #TODO test_rule_timeout_ms seems to be ignored on Linux
                 test_rule_timeout_ms = 45000,
                 labels = [ 'checkstyle' ],
         )