diff --git a/ftdetect/just.vim b/ftdetect/just.vim
index 93a55ff..536d6ee 100644
--- a/ftdetect/just.vim
+++ b/ftdetect/just.vim
@@ -4,4 +4,4 @@
 " URL:		https://github.com/NoahTheDuke/vim-just.git
 " Last Change:	2024 Mar 03
 au BufNewFile,BufRead \c{,*.}justfile,\c*.just  setfiletype just
-au BufNewFile,BufRead *  if getline(1) =~# '\v^#!//@!%(\w|-|//@!)*/%(env%(\s+-S)?\s+)?just\A' | setfiletype just | endif
+au BufNewFile,BufRead *  if getline(1) =~# '\v^#!/%(\w|[-/])*/%(env%(\s+-S)?\s+)?just\A' | setfiletype just | endif
diff --git a/tests/cases/ftdetect.yml b/tests/cases/ftdetect.yml
index 3eb2cc6..231b0ca 100644
--- a/tests/cases/ftdetect.yml
+++ b/tests/cases/ftdetect.yml
@@ -82,7 +82,5 @@
   not_justfile: true
 
 - content: "#!/usr//bin/env just -f\n"
-  not_justfile: true
 
 - content: "#!//usr/local/bin/just -f\n"
-  not_justfile: true