diff --git a/sled-diagnostics/src/contract.rs b/sled-diagnostics/src/contract.rs
index 8b090b3193..295e11d699 100644
--- a/sled-diagnostics/src/contract.rs
+++ b/sled-diagnostics/src/contract.rs
@@ -1,3 +1,9 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+// ! Bindings to libcontract(3lib).
+
 use fs_err as fs;
 use libc::{c_char, c_int, c_void, pid_t};
 use slog::{warn, Logger};