diff --git a/avilib-0.6.10/avilib.c b/avilib-0.6.10/avilib.c
index 27982acd4..ff05a0f75 100644
--- a/avilib-0.6.10/avilib.c
+++ b/avilib-0.6.10/avilib.c
@@ -625,7 +625,7 @@ avi_t* AVI_open_output_file(char * filename)
       we do not truncate the file when we open it.
       Instead it is truncated when the AVI file is closed */
 
-#if defined(SYS_UNIX)
+#if defined(SYS_UNIX) || defined(SYS_APPLE)
    AVI->fdes = xio_open(filename, O_RDWR|O_CREAT,
 		    S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH);
 #elif defined(COMP_MINGW) || defined(COMP_CYGWIN)