diff --git a/docs/lang/functions.md b/docs/lang/functions.md
index 16160111..f549b440 100644
--- a/docs/lang/functions.md
+++ b/docs/lang/functions.md
@@ -14,7 +14,7 @@ Examples:
 
     void do_nothing() { }
     inline byte two() = 2
-    extern asm void chkout(byte register(a) char) @ $FFD2
+    asm void chkout(byte register(a) char) @ $FFD2 extern
     segment(prgrom0) void main_loop(word w, byte x) align(fast) { // body omitted