diff --git a/mps/.clang-format b/mps/.clang-format
new file mode 100644
index 00000000000..cc8f4f91d17
--- /dev/null
+++ b/mps/.clang-format
@@ -0,0 +1,12 @@
+# Configure clang-format to follow the conventions described in
+# design/guide.impl.c.format.txt.  This is work in progress and not
+# everything is covered yet.  I'm using clang-format version 19.
+
+BasedOnStyle: Mozilla
+ColumnLimit: 72
+AllowAllArgumentsOnNextLine: false
+BreakAfterReturnType: Automatic
+
+# Local Variables:
+# mode: yaml
+# End: