diff --git a/src/stb_image.c b/src/stb_image.c
index 9cd6c27d..88feb8f2 100644
--- a/src/stb_image.c
+++ b/src/stb_image.c
@@ -1,3 +1,24 @@
+/*
+** stb_image.c
+**
+** This file is part of mkxp.
+**
+** Copyright (C) 2013 - 2021 Amaryllis Kulla <ancurio@mapleshrine.eu>
+**
+** mkxp is free software: you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation, either version 2 of the License, or
+** (at your option) any later version.
+**
+** mkxp is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with mkxp.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #include "stb_image_malloc.h"
 
 #define STB_IMAGE_IMPLEMENTATION
diff --git a/src/stb_image_malloc.h b/src/stb_image_malloc.h
index 84505649..f63d47b9 100644
--- a/src/stb_image_malloc.h
+++ b/src/stb_image_malloc.h
@@ -1,3 +1,24 @@
+/*
+** stb_image_malloc.h
+**
+** This file is part of mkxp.
+**
+** Copyright (C) 2013 - 2021 Amaryllis Kulla <ancurio@mapleshrine.eu>
+**
+** mkxp is free software: you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation, either version 2 of the License, or
+** (at your option) any later version.
+**
+** mkxp is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with mkxp.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #ifndef MKXPZ_STB_IMAGE_MALLOC_H
 #define MKXPZ_STB_IMAGE_MALLOC_H
 
@@ -7,4 +28,4 @@
 #define STBI_REALLOC realloc
 #define STBI_FREE free
 
-#endif // MKXPZ_STB_IMAGE_MALLOC_H
+#endif /* MKXPZ_STB_IMAGE_MALLOC_H */
diff --git a/src/stb_sprintf.c b/src/stb_sprintf.c
index 7406c8ea..67ab9ad8 100644
--- a/src/stb_sprintf.c
+++ b/src/stb_sprintf.c
@@ -1,3 +1,24 @@
+/*
+** stb_sprintf.c
+**
+** This file is part of mkxp.
+**
+** Copyright (C) 2013 - 2021 Amaryllis Kulla <ancurio@mapleshrine.eu>
+**
+** mkxp is free software: you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation, either version 2 of the License, or
+** (at your option) any later version.
+**
+** mkxp is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with mkxp.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #define STB_SPRINTF_IMPLEMENTATION
 #define STB_SPRINTF_NOUNALIGNED
 #include <stb_sprintf.h>