diff --git a/gstreamer-validate/src/action_type.rs b/gstreamer-validate/src/action_type.rs
index ee64ce66b..f588ef2d9 100644
--- a/gstreamer-validate/src/action_type.rs
+++ b/gstreamer-validate/src/action_type.rs
@@ -1,3 +1,5 @@
+// Take a look at the license at the top of the repository in the LICENSE file.
+
 use std::{ffi::c_int, ptr};
 
 use crate::{ffi, Action};
diff --git a/gstreamer-validate/src/enums.rs b/gstreamer-validate/src/enums.rs
index 7e0fdc3f9..ba65dc4ba 100644
--- a/gstreamer-validate/src/enums.rs
+++ b/gstreamer-validate/src/enums.rs
@@ -1,3 +1,5 @@
+// Take a look at the license at the top of the repository in the LICENSE file.
+
 use crate::ffi;
 use glib::translate::*;
 
diff --git a/gstreamer-validate/src/reporter.rs b/gstreamer-validate/src/reporter.rs
index f2c624d45..8b66a5376 100644
--- a/gstreamer-validate/src/reporter.rs
+++ b/gstreamer-validate/src/reporter.rs
@@ -1,3 +1,5 @@
+// Take a look at the license at the top of the repository in the LICENSE file.
+
 use glib::translate::*;
 
 use crate::action::Action;