diff --git a/m4/jm-macros.m4 b/m4/jm-macros.m4
index 1fa0d076b..cd38e08b7 100644
--- a/m4/jm-macros.m4
+++ b/m4/jm-macros.m4
@@ -56,8 +56,6 @@ AC_DEFUN(jm_MACROS,
   AC_REQUIRE([AC_FUNC_ALLOCA])
   AC_REQUIRE([AM_FUNC_GETLOADAVG])
   AC_REQUIRE([jm_SYS_PROC_UPTIME])
-  AC_REQUIRE([AM_SYS_POSIX_TERMIOS])
-  AC_REQUIRE([jm_HEADER_TIOCGWINSZ_NEEDS_SYS_IOCTL])
 
   AC_REPLACE_FUNCS(strcasecmp strncasecmp)
   AC_REPLACE_FUNCS(dup2)