diff --git a/git-open b/git-open
index 678b10e..c0115d9 100755
--- a/git-open
+++ b/git-open
@@ -18,11 +18,10 @@ git open [remote] [branch]
   Available options are
 i,issue!      open issues page
 "
-SUBDIRECTORY_OK=true
 
 # https://github.com/koalaman/shellcheck/wiki/SC1090
 # shellcheck source=/dev/null
-. "$(git --exec-path)/git-sh-setup"
+SUBDIRECTORY_OK='Yes' . "$(git --exec-path)/git-sh-setup"
 
 # Defaults
 is_issue=0