diff --git a/mod/module-b/README.md b/mod/material_fabrication/README.md
similarity index 100%
rename from mod/module-b/README.md
rename to mod/material_fabrication/README.md
diff --git a/mod/mould/README.md b/mod/mould/README.md
new file mode 100644
index 0000000..3f04f0c
--- /dev/null
+++ b/mod/mould/README.md
@@ -0,0 +1,4 @@
+# README `mod/module-b/`
+
+null
+
diff --git a/mod/module-a/README.md b/mod/mounting_system/README.md
similarity index 100%
rename from mod/module-a/README.md
rename to mod/mounting_system/README.md