diff --git a/source4/lib/tdb/common/io.c b/source4/lib/tdb/common/io.c
index 4ec18de48e0..661f7614892 100644
--- a/source4/lib/tdb/common/io.c
+++ b/source4/lib/tdb/common/io.c
@@ -191,10 +191,6 @@ int tdb_munmap(struct tdb_context *tdb)
 	if (tdb->map_ptr) {
 		int ret;
 
-		ret = msync(tdb->map_ptr, tdb->map_size, MS_SYNC);
-		if (ret != 0)
-			return ret;
-
 		ret = munmap(tdb->map_ptr, tdb->map_size);
 		if (ret != 0)
 			return ret;