diff --git a/runtime/spell/yi/main.aap b/runtime/spell/yi/main.aap
index 8160e83..31d057e 100644
--- a/runtime/spell/yi/main.aap
+++ b/runtime/spell/yi/main.aap
@@ -14,7 +14,7 @@
 
 $SPELLDIR/yi.utf-8.spl : $VIM $FILES
     :sys $VIM -u NONE -e -c "set enc=utf-8"
-            -c "mkspell! $(SPELLDIR)/yi yi" -c q
+            -c "mkspell! $SPELLDIR/yi yi" -c q
 
 ../README_yi.txt : README.txt
     :copy $source $target