diff --git a/configure.in b/configure.in
index 8170b087a..9c0d0c6f6 100644
--- a/configure.in
+++ b/configure.in
@@ -272,7 +272,6 @@ AC_CHECK_HEADERS([\
 	sys/mman.h				\
 	sys/pty.h				\
 	sys/ptyio.h				\
-	sys/ptyvar.h				\
 	sys/select.h				\
 	sys/socket.h				\
 	sys/str_tty.h				\
@@ -301,6 +300,11 @@ AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
 #include <sys/socket.h>
 #endif])
 
+AC_CHECK_HEADERS(sys/ptyvar.h, , , [AC_INCLUDES_DEFAULT
+#if HAVE_SYS_TTY_H
+#include <sys/tty.h>
+#endif])
+
 AC_CHECK_HEADERS(sys/strtty.h, , , [AC_INCLUDES_DEFAULT
 #if HAVE_SYS_STREAM_H
 #include <sys/stream.h>