diff --git a/ports/src/lib/libc_noux/plugin.cc b/ports/src/lib/libc_noux/plugin.cc
index d999419d5f..662e1da259 100644
--- a/ports/src/lib/libc_noux/plugin.cc
+++ b/ports/src/lib/libc_noux/plugin.cc
@@ -949,11 +949,18 @@ namespace {
 					PDBG("TIOCGETA - argp=0x%p", argp);
 				::termios *termios = (::termios *)argp;
 
+				termios->c_iflag = 0;
+				termios->c_oflag = 0;
+				termios->c_cflag = 0;
 				/*
 				 * Set 'ECHO' flag, needed by libreadline. Otherwise, echoing
 				 * user input doesn't work in bash.
 				 */
 				termios->c_lflag = ECHO;
+				memset(termios->c_cc, _POSIX_VDISABLE, sizeof(termios->c_cc));
+				termios->c_ispeed = 0;
+				termios->c_ospeed = 0;
+
 				return 0;
 			}