diff --git a/src/otherfilters/mspcapfileplayer.c b/src/otherfilters/mspcapfileplayer.c
index 1337089..8841882 100644
--- a/src/otherfilters/mspcapfileplayer.c
+++ b/src/otherfilters/mspcapfileplayer.c
@@ -33,8 +33,9 @@
 #include <fcntl.h>
 #include <sys/types.h>
 #include <sys/stat.h>
-
-
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
 
 static int player_close(MSFilter *f, void *arg);