diff --git a/assets/disk0/tvdos/bin/command.js b/assets/disk0/tvdos/bin/command.js
index 83569a5..26c7aaf 100644
--- a/assets/disk0/tvdos/bin/command.js
+++ b/assets/disk0/tvdos/bin/command.js
@@ -615,8 +615,8 @@ require = function(path) {
     else {
         // if the path starts with ".", look for the current directory
         // if the path starts with [A-Za-z0-9], look for the DOSDIR/includes
-        if (path[0] == '.') return shell.require(shell.resolvePathInput(path).full + ".js")
-        else return shell.require(`A:${_TVDOS.variables.DOSDIR}/include/${path}.js`)
+        if (path[0] == '.') return shell.require(shell.resolvePathInput(path).full + ".mjs")
+        else return shell.require(`A:${_TVDOS.variables.DOSDIR}/include/${path}.mjs`)
     }
 }
 
diff --git a/assets/disk0/tvdos/include/example.js b/assets/disk0/tvdos/include/example.mjs
similarity index 100%
rename from assets/disk0/tvdos/include/example.js
rename to assets/disk0/tvdos/include/example.mjs
diff --git a/assets/disk0/tvdos/include/gl.js b/assets/disk0/tvdos/include/gl.mjs
similarity index 100%
rename from assets/disk0/tvdos/include/gl.js
rename to assets/disk0/tvdos/include/gl.mjs
diff --git a/assets/disk0/tvdos/include/mload.js b/assets/disk0/tvdos/include/mload.mjs
similarity index 100%
rename from assets/disk0/tvdos/include/mload.js
rename to assets/disk0/tvdos/include/mload.mjs
diff --git a/assets/disk0/tvdos/include/pcm.js b/assets/disk0/tvdos/include/pcm.mjs
similarity index 100%
rename from assets/disk0/tvdos/include/pcm.js
rename to assets/disk0/tvdos/include/pcm.mjs
diff --git a/assets/disk0/tvdos/include/seqread.js b/assets/disk0/tvdos/include/seqread.mjs
similarity index 100%
rename from assets/disk0/tvdos/include/seqread.js
rename to assets/disk0/tvdos/include/seqread.mjs
diff --git a/assets/disk0/tvdos/include/wintex.js b/assets/disk0/tvdos/include/wintex.mjs
similarity index 100%
rename from assets/disk0/tvdos/include/wintex.js
rename to assets/disk0/tvdos/include/wintex.mjs