diff --git a/src/kernel/libroot/posix/unistd/Jamfile b/src/kernel/libroot/posix/unistd/Jamfile
index 5c6282cbc4..987306f8fa 100644
--- a/src/kernel/libroot/posix/unistd/Jamfile
+++ b/src/kernel/libroot/posix/unistd/Jamfile
@@ -19,6 +19,7 @@ KernelMergeObject posix_unistd.o :
 	<$(SOURCE_GRIST)>process.c
 	<$(SOURCE_GRIST)>read.c
 	<$(SOURCE_GRIST)>sleep.c
+	<$(SOURCE_GRIST)>sync.c
 	<$(SOURCE_GRIST)>terminal.c
 	<$(SOURCE_GRIST)>truncate.c
 	<$(SOURCE_GRIST)>ttyname.c
diff --git a/src/kernel/libroot/posix/unistd/sync.c b/src/kernel/libroot/posix/unistd/sync.c
new file mode 100644
index 0000000000..955c1632b2
--- /dev/null
+++ b/src/kernel/libroot/posix/unistd/sync.c
@@ -0,0 +1,35 @@
+/* 
+** Copyright 2004, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
+** Distributed under the terms of the Haiku License.
+*/
+
+
+#include <unistd.h>
+#include <syscalls.h>
+#include <errno.h>
+
+
+int
+fsync(int fd)
+{
+	int status = _kern_fsync(fd);
+	if (status < 0) {
+		errno = status;
+		status = -1;
+	}
+
+	return status;
+}
+
+
+int
+sync(void)
+{
+	int status = _kern_sync();
+	if (status < 0) {
+		errno = status;
+		status = -1;
+	}
+
+	return status;
+}