diff --git a/assets/basic.js b/assets/basic.js
index 31046eb..1bb4087 100644
--- a/assets/basic.js
+++ b/assets/basic.js
@@ -2818,6 +2818,8 @@ bF.run = function(args) { // RUN function
 };
 bF.save = function(args) { // SAVE function
     if (args[1] === undefined) throw lang.missingOperand;
+    if (!args[1].toUpperCase().endsWith(".BAS"))
+        args[1] += ".bas";
     fs.open(args[1], "W");
     var sb = "";
     cmdbuf.forEach((v, i) => sb += i+" "+v+"\n");
diff --git a/assets/facmap b/assets/facmap
deleted file mode 100644
index 6017f5b..0000000
--- a/assets/facmap
+++ /dev/null
@@ -1,3 +0,0 @@
-10 DEFUN FAC(N)=IF N==0 THEN 1 ELSE N*FAC(N-1)
-20 K=MAP(FAC, 1 TO 10)
-30 PRINT K