diff --git a/Documentation/SubmitChecklist b/Documentation/SubmitChecklist
index a10bfb6ecd9fa4e55c9beecd2e588c9a0359ec71..a6cb6ffd293377bef9a19cd077299626fcb5bf47 100644
--- a/Documentation/SubmitChecklist
+++ b/Documentation/SubmitChecklist
@@ -61,3 +61,6 @@ kernel patches.
     Documentation/kernel-parameters.txt.
 
 18: All new module parameters are documented with MODULE_PARM_DESC()
+
+19: All new userspace interfaces are documented in Documentation/ABI/.
+    See Documentation/ABI/README for more information.