diff --git a/presubmit_canned_checks.py b/presubmit_canned_checks.py
index dc90c7e48..a652f1832 100644
--- a/presubmit_canned_checks.py
+++ b/presubmit_canned_checks.py
@@ -520,6 +520,7 @@ def CheckLongLines(input_api, output_api, maxlen, source_file_filter=None):
       'java': 100,
       # This is specifically for Android's handwritten makefiles (Android.mk).
       'mk': 200,
+      'rs': 100,
       '': maxlen,
   }