diff --git a/configure.ac b/configure.ac
index 432cb3df..1915f298 100644
--- a/configure.ac
+++ b/configure.ac
@@ -24,8 +24,8 @@ AC_PROG_INSTALL
 
 # Configuration.
 AC_HEADER_STDC
-AC_CHECK_HEADERS(fstaby.h)
-AC_CHECK_FUNCS(strstr getopt getfsenty)
+AC_CHECK_HEADERS([fstaby.h termios.h])
+AC_CHECK_FUNCS([strstr getopt getfsenty])
 
 # Check for uint[8,16,32]_t
 AC_TYPE_UINT8_T