diff --git a/newlib/libc/sys/phoenix/sync.c b/newlib/libc/sys/phoenix/sync.c
index de478c91d..6f726408d 100644
--- a/newlib/libc/sys/phoenix/sync.c
+++ b/newlib/libc/sys/phoenix/sync.c
@@ -43,3 +43,8 @@ int fsync(int fd)
 
 	return ret;
 }
+
+int fdatasync(int fd)
+{
+	return fsync(fd);
+}