diff --git a/dictsource/ar_rules b/dictsource/ar_rules
index 18427b0f..cb63e382 100644
--- a/dictsource/ar_rules
+++ b/dictsource/ar_rules
@@ -87,7 +87,7 @@
          ا (ُ         ?
          ا (ِ         ?
       _) ا           a       // make the previous fatha long
-      _) ال (L10ّP2   ?a      //الشمس
+      _) ال (L10P2   ?a      //الشمس
       _) ال (L11P2   ?al     //القمر
       _) ال (تP2     ?at
       _) ال (ثP2     ?aT