diff --git a/src/kaleidoscope/hardware/ErgoDox.cpp b/src/kaleidoscope/hardware/ErgoDox.cpp
index 4fc99e77..bf5ac8a0 100644
--- a/src/kaleidoscope/hardware/ErgoDox.cpp
+++ b/src/kaleidoscope/hardware/ErgoDox.cpp
@@ -2,7 +2,13 @@
  * Kaleidoscope-Hardware-ErgoDox -- ErgoDox hardware support for Kaleidoscope
  * Copyright (C) 2018  Gergely Nagy
  *
- * Based on QMK, which is (C) Jack Humbert, Erez Zukerman, et al.
+ * Based on QMK (commit 8cdb4a915)
+ *  (C) Jack Humbert, Erez Zukerman, Oleg Kostyuk
+ * Original QMK sources:
+ *  - keyboards/ergodox_ez/ergodox_ez.c
+ *  - keyboards/ergodox_ez/ergodox_ez.h
+ *  - keyboards/ergodox_ez/matrix.c
+ *  - tmk_core/common/avr/bootloader.c
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/kaleidoscope/hardware/ErgoDox.h b/src/kaleidoscope/hardware/ErgoDox.h
index 0d0ddcc3..8e04e6c5 100644
--- a/src/kaleidoscope/hardware/ErgoDox.h
+++ b/src/kaleidoscope/hardware/ErgoDox.h
@@ -2,7 +2,12 @@
  * Kaleidoscope-Hardware-ErgoDox -- ErgoDox hardware support for Kaleidoscope
  * Copyright (C) 2018  Gergely Nagy
  *
- * Based on QMK, which is (C) Jack Humbert, Erez Zukerman, et al.
+ * Based on QMK (commit 8cdb4a915)
+ *  (C) Jack Humbert, Erez Zukerman, Oleg Kostyuk
+ * Original QMK sources:
+ *  - keyboards/ergodox_ez/ergodox_ez.c
+ *  - keyboards/ergodox_ez/ergodox_ez.h
+ *  - keyboards/ergodox_ez/matrix.c
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/kaleidoscope/hardware/ErgoDoxScanner.cpp b/src/kaleidoscope/hardware/ErgoDoxScanner.cpp
index 20d7519f..c5e0e8f4 100644
--- a/src/kaleidoscope/hardware/ErgoDoxScanner.cpp
+++ b/src/kaleidoscope/hardware/ErgoDoxScanner.cpp
@@ -2,7 +2,12 @@
  * Kaleidoscope-Hardware-ErgoDox -- ErgoDox hardware support for Kaleidoscope
  * Copyright (C) 2018  Gergely Nagy
  *
- * Based on QMK, which is (C) Jack Humbert, Erez Zukerman, et al.
+ * Based on QMK (commit 8cdb4a915)
+ *  (C) Jack Humbert, Erez Zukerman, Oleg Kostyuk
+ * Original QMK sources:
+ *  - keyboards/ergodox_ez/ergodox_ez.c
+ *  - keyboards/ergodox_ez/ergodox_ez.h
+ *  - keyboards/ergodox_ez/matrix.c
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/kaleidoscope/hardware/ErgoDoxScanner.h b/src/kaleidoscope/hardware/ErgoDoxScanner.h
index 457906ae..86fdcbd7 100644
--- a/src/kaleidoscope/hardware/ErgoDoxScanner.h
+++ b/src/kaleidoscope/hardware/ErgoDoxScanner.h
@@ -2,7 +2,12 @@
  * Kaleidoscope-Hardware-ErgoDox -- ErgoDox hardware support for Kaleidoscope
  * Copyright (C) 2018  Gergely Nagy
  *
- * Based on QMK, which is (C) Jack Humbert, Erez Zukerman, et al.
+ * Based on QMK (commit 8cdb4a915)
+ *  (C) Jack Humbert, Erez Zukerman, Oleg Kostyuk
+ * Original QMK sources:
+ *  - keyboards/ergodox_ez/ergodox_ez.c
+ *  - keyboards/ergodox_ez/ergodox_ez.h
+ *  - keyboards/ergodox_ez/matrix.c
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by