diff --git a/PRESUBMIT.cfg b/PRESUBMIT.cfg
index c683529..4fb5526 100644
--- a/PRESUBMIT.cfg
+++ b/PRESUBMIT.cfg
@@ -3,6 +3,7 @@
 aosp_license_check: false
 cros_license_check: false
 long_line_check: false
+signoff_check: true
 stray_whitespace_check: false
 tab_check: false
 tabbed_indent_required_check: false