diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..2f409b3
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,23 @@
+MIT License
+===========
+
+- Copyright © 2018-2020 nullgemm
+- Copyright © 2019-2020 Kiëd Llaentenn
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights to
+(mis)use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+- The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THIS SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/LICENSE.md b/LICENSE.md
deleted file mode 100644
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--- a/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-### MIT License
-
-> Copyright 2019 Kied Llaentenn
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of this
-software and associated documentation files (the "Software"), to deal in the Software
-without restriction, including without limitation the rights to (mis)use, copy, modify,
-merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to the following
-conditions:
-
-- The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-**the software is provided "as is", without warranty of any kind, express or implied, 
-including but not limited to the warranties of merchantability, fitness for a 
-particular purpose and noninfringement. in no event shall the authors or copyright
-holders be liable for any claim, damages or other liability, whether in an action of
-contract, tort or otherwise, arising from, out of or in connection with the software
-or the use or other dealings in the software.**