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-rw-r--r--Src/system.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/Src/system.h b/Src/system.h
index a57e67fb6..04a21edd8 100644
--- a/Src/system.h
+++ b/Src/system.h
@@ -337,7 +337,7 @@ struct timezone {
 # endif  /* HAVE_TERMIO_H  */
 #endif   /* HAVE_TERMIOS_H */
 
-#if defined(GWINSZ_IN_SYS_IOCTL) || defined(CLOBBERS_TYPEAHEAD)
+#if defined(GWINSZ_IN_SYS_IOCTL) || defined(IOCTL_IN_SYS_IOCTL)
 # include <sys/ioctl.h>
 #endif
 #ifdef WINSIZE_IN_PTEM