diff -u -r ../ruby-2.1.2/ext/pty/pty.c ./ext/pty/pty.c
--- ../ruby-2.1.2/ext/pty/pty.c	2014-02-10 12:45:14.000000000 +0100
+++ ./ext/pty/pty.c	2014-06-27 02:17:31.936710571 +0200
@@ -174,7 +174,7 @@
 	    if (pwent && pwent->pw_shell)
 		shellname = pwent->pw_shell;
 	    else
-		shellname = "/bin/sh";
+		shellname = "/system/bin/sh";
 	}
 	v = rb_str_new2(shellname);
 	argc = 1;