diff --git a/README.MMGLUE b/README.MMGLUE
deleted file mode 100644
index 23b24b8..0000000
--- a/README.MMGLUE
+++ /dev/null
@@ -1,8 +0,0 @@
-mmglue
-======
-
-this repository contains the midipix architecture- and target-specific
-bits for musl libc (musl-libc.org).
-
-the midipix musl port does not require any changes to upstream source files,
-and has all files under the appropriate architecture-specific directories.
diff --git a/README.MMGLUE.md b/README.MMGLUE.md
new file mode 100644
index 0000000..23b24b8
--- /dev/null
+++ b/README.MMGLUE.md
@@ -0,0 +1,8 @@
+mmglue
+======
+
+this repository contains the midipix architecture- and target-specific
+bits for musl libc (musl-libc.org).
+
+the midipix musl port does not require any changes to upstream source files,
+and has all files under the appropriate architecture-specific directories.