diff --git a/include/sys/dmu.h b/include/sys/dmu.h
index 9c700e2d7b..54fdbc9ad2 100644
--- a/include/sys/dmu.h
+++ b/include/sys/dmu.h
@@ -337,7 +337,6 @@ int dmu_objset_clone(const char *name, const char *origin);
 int dsl_destroy_snapshots_nvl(struct nvlist *snaps, boolean_t defer,
     struct nvlist *errlist);
 int dmu_objset_snapshot_one(const char *fsname, const char *snapname);
-int dmu_objset_snapshot_tmp(const char *, const char *, int);
 int dmu_objset_find(const char *name, int func(const char *, void *), void *arg,
     int flags);
 void dmu_objset_byteswap(void *buf, size_t size);