diff --git a/src/dsp/node_formfm.rs b/src/dsp/node_formfm.rs
index 702a213..265f736 100644
--- a/src/dsp/node_formfm.rs
+++ b/src/dsp/node_formfm.rs
@@ -1,3 +1,7 @@
+// Copyright (c) 2022 Dimas Leenman <skythedragon@outlook.com>
+// This file is a part of HexoDSP. Released under GPL-3.0-or-later.
+// See README.md and COPYING for details.
+
 use crate::dsp::{DspNode, LedPhaseVals, NodeContext, NodeId, ProcBuf, SAtom};
 use crate::nodes::{NodeAudioContext, NodeExecContext};
 
diff --git a/tests/node_formfm.rs b/tests/node_formfm.rs
index f54c6f7..dc728e6 100644
--- a/tests/node_formfm.rs
+++ b/tests/node_formfm.rs
@@ -1,3 +1,7 @@
+// Copyright (c) 2022 Dimas Leenman <skythedragon@outlook.com>
+// This file is a part of HexoDSP. Released under GPL-3.0-or-later.
+// See README.md and COPYING for details.
+
 mod common;
 use common::*;