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-rw-r--r--rts/posix/TTY.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/rts/posix/TTY.c b/rts/posix/TTY.c
index 2ce822a99a..88fca28306 100644
--- a/rts/posix/TTY.c
+++ b/rts/posix/TTY.c
@@ -12,10 +12,10 @@
#include "RtsUtils.h" // __hscore_get/set prototypes
#include "TTY.h"
-#ifdef HAVE_TERMIOS_H
+#if defined(HAVE_TERMIOS_H)
#include <termios.h>
#endif
-#ifdef HAVE_SIGNAL_H
+#if defined(HAVE_SIGNAL_H)
#include <signal.h>
#endif