diff --git a/dots/lf/lfrc b/dots/lf/lfrc
index 38a3786..c124e84 100644
--- a/dots/lf/lfrc
+++ b/dots/lf/lfrc
@@ -65,7 +65,7 @@ map X !$f
 cmd open ${{
 
     case "$f" in
-        *.([Rr][Rr][Pr])*) reaper $fx;;
+        *.[Rr][Pp][Pp]*) reaper $fx;;
     esac
 
     case $(file --mime-type -Lb $f) in