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-rw-r--r--slirp/slirp.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/slirp/slirp.h b/slirp/slirp.h
index 3a5d592fb9..6c7488c9a4 100644
--- a/slirp/slirp.h
+++ b/slirp/slirp.h
@@ -24,7 +24,9 @@ typedef char *caddr_t;
 #else
 # define ioctlsocket ioctl
 # define closesocket(s) close(s)
-# define O_BINARY 0
+# if !defined(__HAIKU__)
+#  define O_BINARY 0
+# endif
 #endif
 
 #include <sys/types.h>