diff --git a/debian/csh.login b/debian/csh.login
index 7c293ed..e5e10b1 100644
--- a/debian/csh.login
+++ b/debian/csh.login
@@ -1,8 +1,8 @@
 # /etc/csh.login: system-wide .login file for csh(1) and tcsh(1)
 
 # allow for other packages/system admins to customize the shell environment
-if (-e /etc/csh/login.d && `ls /etc/csh/login.d` != "") then
-  foreach FILE (`ls /etc/csh/login.d/*`)
+if (-e /etc/csh/login.d && `/bin/ls /etc/csh/login.d` != "") then
+  foreach FILE (`/bin/ls /etc/csh/login.d/*`)
     source $FILE;
   end;
 endif