diff --git a/crc.c b/crc.c
index 38a809e1037..e6e86f10afe 100644
--- a/crc.c
+++ b/crc.c
@@ -1,3 +1,6 @@
+/* Copyright (C) 2022-2023 Salvatore Sanfilippo -- All Rights Reserved
+ * See the LICENSE file for information about the license. */
+
 #include <stdint.h>
 #include <stddef.h>
 
diff --git a/protocols/b4b1.c b/protocols/b4b1.c
index 92e77ee3a31..d3c3d405d90 100644
--- a/protocols/b4b1.c
+++ b/protocols/b4b1.c
@@ -1,4 +1,7 @@
-/* PT/SC remotes. Usually 443.92 Mhz OOK.
+/* Copyright (C) 2022-2023 Salvatore Sanfilippo -- All Rights Reserved
+ * See the LICENSE file for information about the license.
+ *
+ * PT/SC remotes. Usually 443.92 Mhz OOK.
  *
  * This line code is used in many remotes such as Princeton chips
  * named PT2262, Silian Microelectronics SC5262 and others.
diff --git a/protocols/keeloq.c b/protocols/keeloq.c
index 0741eac4770..78ad10d2a8a 100644
--- a/protocols/keeloq.c
+++ b/protocols/keeloq.c
@@ -1,4 +1,7 @@
-/* Microchip HCS200/HCS300/HSC301 KeeLoq, rolling code remotes.
+/* Copyright (C) 2022-2023 Salvatore Sanfilippo -- All Rights Reserved
+ * See the LICENSE file for information about the license.
+ *
+ * Microchip HCS200/HCS300/HSC301 KeeLoq, rolling code remotes.
  *
  * Usually 443.92 Mhz OOK, ~200us or ~400us pulse len, depending
  * on the configuration.
diff --git a/protocols/oregon2.c b/protocols/oregon2.c
index 1d909a5040e..752bfcf9657 100644
--- a/protocols/oregon2.c
+++ b/protocols/oregon2.c
@@ -1,4 +1,7 @@
-/* Oregon remote termometers. Usually 443.92 Mhz OOK.
+/* Copyright (C) 2022-2023 Salvatore Sanfilippo -- All Rights Reserved
+ * See the LICENSE file for information about the license.
+ *
+ * Oregon remote termometers. Usually 443.92 Mhz OOK.
  *
  * The protocol is described here:
  * https://wmrx00.sourceforge.net/Arduino/OregonScientific-RF-Protocols.pdf
diff --git a/protocols/tpms/citroen.c b/protocols/tpms/citroen.c
index d8a1681e490..27de2a88b0f 100644
--- a/protocols/tpms/citroen.c
+++ b/protocols/tpms/citroen.c
@@ -1,4 +1,7 @@
-/* Citroen TPMS. Usually 443.92 Mhz FSK.
+/* Copyright (C) 2022-2023 Salvatore Sanfilippo -- All Rights Reserved
+ * See the LICENSE file for information about the license.
+ *
+ * Citroen TPMS. Usually 443.92 Mhz FSK.
  *
  * Preamble of ~14 high/low 52 us pulses
  * Sync of high 100us pulse then 50us low
diff --git a/protocols/tpms/ford.c b/protocols/tpms/ford.c
index abdb692ee53..d7f26884cb2 100644
--- a/protocols/tpms/ford.c
+++ b/protocols/tpms/ford.c
@@ -1,4 +1,7 @@
-/* Ford tires TPMS. Usually 443.92 Mhz FSK (in Europe).
+/* Copyright (C) 2022-2023 Salvatore Sanfilippo -- All Rights Reserved
+ * See the LICENSE file for information about the license.
+ *
+ * Ford tires TPMS. Usually 443.92 Mhz FSK (in Europe).
  *
  * 52 us short pules
  * Preamble: 0101010101010101010101010101
diff --git a/protocols/tpms/renault.c b/protocols/tpms/renault.c
index 09de77d17b3..34cc3a8e31e 100644
--- a/protocols/tpms/renault.c
+++ b/protocols/tpms/renault.c
@@ -1,4 +1,7 @@
-/* Renault tires TPMS. Usually 443.92 Mhz FSK.
+/* Copyright (C) 2022-2023 Salvatore Sanfilippo -- All Rights Reserved
+ * See the LICENSE file for information about the license.
+ *
+ * Renault tires TPMS. Usually 443.92 Mhz FSK.
  *
  * Preamble + sync + Manchester bits. ~48us short pulse.
  * 9 Bytes in total not counting the preamble. */
diff --git a/protocols/tpms/schrader.c b/protocols/tpms/schrader.c
index ae25e39bb86..8cf7b6b6f89 100644
--- a/protocols/tpms/schrader.c
+++ b/protocols/tpms/schrader.c
@@ -1,4 +1,7 @@
-/* Schrader TPMS. Usually 443.92 Mhz OOK, 120us pulse len.
+/* Copyright (C) 2022-2023 Salvatore Sanfilippo -- All Rights Reserved
+ * See the LICENSE file for information about the license.
+ *
+ * Schrader TPMS. Usually 443.92 Mhz OOK, 120us pulse len.
  *
  * 500us high pulse + Preamble + Manchester coded bits where:
  * 1 = 10
diff --git a/protocols/tpms/schrader_eg53ma4.c b/protocols/tpms/schrader_eg53ma4.c
index 0105010bddb..c7e95cbfb61 100644
--- a/protocols/tpms/schrader_eg53ma4.c
+++ b/protocols/tpms/schrader_eg53ma4.c
@@ -1,4 +1,7 @@
-/* Schrader variant EG53MA4 TPMS.
+/* Copyright (C) 2022-2023 Salvatore Sanfilippo -- All Rights Reserved
+ * See the LICENSE file for information about the license.
+ *
+ * Schrader variant EG53MA4 TPMS.
  * Usually 443.92 Mhz OOK, 100us pulse len.
  *
  * Preamble: alternating pulse/gap, 100us.
diff --git a/protocols/tpms/toyota.c b/protocols/tpms/toyota.c
index b9dd1d95980..6a7e79ac579 100644
--- a/protocols/tpms/toyota.c
+++ b/protocols/tpms/toyota.c
@@ -1,4 +1,7 @@
-/* Toyota tires TPMS. Usually 443.92 Mhz FSK (In Europe).
+/* Copyright (C) 2022-2023 Salvatore Sanfilippo -- All Rights Reserved
+ * See the LICENSE file for information about the license.
+ *
+ * Toyota tires TPMS. Usually 443.92 Mhz FSK (In Europe).
  *
  * Preamble + sync + 64 bits of data. ~48us short pulse length.
  *