diff --git a/.gitignore b/.gitignore
index ec7aa45..b00ed42 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,3 +21,4 @@ src/include/config.h.in~
 src/include/stamp-h1
 *.swp
 /tio-*
+/src/bash-completion/tio
diff --git a/configure.ac b/configure.ac
index 04b4d3c..bf66edd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -25,6 +25,23 @@ fi
 AC_SUBST([BASH_COMPLETION_DIR])
 AM_CONDITIONAL([ENABLE_BASH_COMPLETION],[test "x$with_bash_completion_dir" != "xno"])
 
+# Check for available terminal I/O speeds
+AC_CHECK_DECL([B57600], [AC_SUBST([B57600],["57600"])], [], [[#include <termios.h>]])
+AC_CHECK_DECL([B115200], [AC_SUBST([B115200],["115200"])], [], [[#include <termios.h>]])
+AC_CHECK_DECL([B230400], [AC_SUBST([B230400],["230400"])], [], [[#include <termios.h>]])
+AC_CHECK_DECL([B460800], [AC_SUBST([B460800],["460800"])], [], [[#include <termios.h>]])
+AC_CHECK_DECL([B500000], [AC_SUBST([B500000],["500000"])], [], [[#include <termios.h>]])
+AC_CHECK_DECL([B576000], [AC_SUBST([B576000],["576000"])], [], [[#include <termios.h>]])
+AC_CHECK_DECL([B921600], [AC_SUBST([B921600],["921600"])], [], [[#include <termios.h>]])
+AC_CHECK_DECL([B1000000], [AC_SUBST([B1000000],["1000000"])], [], [[#include <termios.h>]])
+AC_CHECK_DECL([B1152000], [AC_SUBST([B1152000],["1152000"])], [], [[#include <termios.h>]])
+AC_CHECK_DECL([B1500000], [AC_SUBST([B1500000],["1500000"])], [], [[#include <termios.h>]])
+AC_CHECK_DECL([B2000000], [AC_SUBST([B2000000],["2000000"])], [], [[#include <termios.h>]])
+AC_CHECK_DECL([B2500000], [AC_SUBST([B2500000],["2500000"])], [], [[#include <termios.h>]])
+AC_CHECK_DECL([B3000000], [AC_SUBST([B3000000],["3000000"])], [], [[#include <termios.h>]])
+AC_CHECK_DECL([B3500000], [AC_SUBST([B3500000],["3500000"])], [], [[#include <termios.h>]])
+AC_CHECK_DECL([B4000000], [AC_SUBST([B4000000],["4000000"])], [], [[#include <termios.h>]])
+
 AC_CONFIG_FILES([Makefile])
 AC_CONFIG_FILES([src/Makefile])
 AC_CONFIG_FILES([man/Makefile])
diff --git a/src/Makefile.am b/src/Makefile.am
index 6129033..85cc19d 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -14,6 +14,28 @@ tio_SOURCES = tty.c \
               include/tio/error.h
 
 if ENABLE_BASH_COMPLETION
+CLEANFILES = bash-completion/tio
+
+do_subst = sed -e 's/57600 /$(B57600) /g' \
+               -e 's/115200 /$(B115200) /g' \
+               -e 's/230400 /$(B230400) /g' \
+               -e 's/460800 /$(B460800) /g' \
+               -e 's/500000 /$(B500000) /g' \
+               -e 's/576000 /$(B576000) /g' \
+               -e 's/921600 /$(B921600) /g' \
+               -e 's/1000000 /$(B1000000) /g' \
+               -e 's/1152000 /$(B1152000) /g' \
+               -e 's/1500000 /$(B1500000) /g' \
+               -e 's/2000000 /$(B2000000) /g' \
+               -e 's/2500000 /$(B2500000) /g' \
+               -e 's/3000000 /$(B3000000) /g' \
+               -e 's/3500000 /$(B3500000) /g' \
+               -e 's/4000000/$(B4000000)/g'
+
+bash-completion/tio: bash-completion/tio.in
+	$(do_subst) < bash-completion/tio.in > bash-completion/tio
+
 bashcompletiondir=@BASH_COMPLETION_DIR@
 dist_bashcompletion_DATA=bash-completion/tio
+
 endif
diff --git a/src/bash-completion/tio b/src/bash-completion/tio.in
similarity index 100%
rename from src/bash-completion/tio
rename to src/bash-completion/tio.in
diff --git a/src/tty.c b/src/tty.c
index 4229457..7e2bf79 100644
--- a/src/tty.c
+++ b/src/tty.c
@@ -211,51 +211,81 @@ void tty_configure(void)
         case 38400:
             baudrate = B38400;
             break;
+#ifdef HAVE_DECL_B57600
         case 57600:
             baudrate = B57600;
             break;
+#endif
+#ifdef HAVE_DECL_B115200
         case 115200:
             baudrate = B115200;
             break;
+#endif
+#ifdef HAVE_DECL_B230400
         case 230400:
             baudrate = B230400;
             break;
+#endif
+#ifdef HAVE_DECL_B460800
         case 460800:
             baudrate = B460800;
             break;
+#endif
+#ifdef HAVE_DECL_B500000
         case 500000:
             baudrate = B500000;
             break;
+#endif
+#ifdef HAVE_DECL_B576000
         case 576000:
             baudrate = B576000;
             break;
+#endif
+#ifdef HAVE_DECL_B921600
         case 921600:
             baudrate = B921600;
             break;
+#endif
+#ifdef HAVE_DECL_B1000000
         case 1000000:
             baudrate = B1000000;
             break;
+#endif
+#ifdef HAVE_DECL_B1152000
         case 1152000:
             baudrate = B1152000;
             break;
+#endif
+#ifdef HAVE_DECL_B1500000
         case 1500000:
             baudrate = B1500000;
             break;
+#endif
+#ifdef HAVE_DECL_B2000000
         case 2000000:
             baudrate = B2000000;
             break;
+#endif
+#ifdef HAVE_DECL_B2500000
         case 2500000:
             baudrate = B2500000;
             break;
+#endif
+#ifdef HAVE_DECL_B3000000
         case 3000000:
             baudrate = B3000000;
             break;
+#endif
+#ifdef HAVE_DECL_B3500000
         case 3500000:
             baudrate = B3500000;
             break;
+#endif
+#ifdef HAVE_DECL_B4000000
         case 4000000:
             baudrate = B4000000;
             break;
+#endif
         default:
             error_printf("Invalid baud rate");
             exit(EXIT_FAILURE);