diff --git a/sys/kern/kern_mutex.c b/sys/kern/kern_mutex.c
index 8b5908f5219..b7316ea5f38 100644
--- a/sys/kern/kern_mutex.c
+++ b/sys/kern/kern_mutex.c
@@ -869,7 +869,7 @@ _thread_lock(struct thread *td)
 		WITNESS_LOCK(&m->lock_object, LOP_EXCLUSIVE, file, line);
 		return;
 	}
-	_mtx_release_lock_quick(m);
+	atomic_store_rel_ptr(&m->mtx_lock, MTX_UNOWNED);
 slowpath_unlocked:
 	spinlock_exit();
 slowpath_noirq:
@@ -959,7 +959,7 @@ thread_lock_flags_(struct thread *td, int opts, const char *file, int line)
 		}
 		if (m == td->td_lock)
 			break;
-		_mtx_release_lock_quick(m);
+		atomic_store_rel_ptr(&m->mtx_lock, MTX_UNOWNED);
 	}
 	LOCK_LOG_LOCK("LOCK", &m->lock_object, opts, m->mtx_recurse, file,
 	    line);
@@ -1071,7 +1071,7 @@ __mtx_unlock_sleep(volatile uintptr_t *c, uintptr_t v)
 	 * can be removed from the hash list if it is empty.
 	 */
 	turnstile_chain_lock(&m->lock_object);
-	_mtx_release_lock_quick(m);
+	atomic_store_rel_ptr(&m->mtx_lock, MTX_UNOWNED);
 	ts = turnstile_lookup(&m->lock_object);
 	MPASS(ts != NULL);
 	if (LOCK_LOG_TEST(&m->lock_object, opts))
diff --git a/sys/sys/mutex.h b/sys/sys/mutex.h
index b534a74626b..83300d4eb59 100644
--- a/sys/sys/mutex.h
+++ b/sys/sys/mutex.h
@@ -221,10 +221,6 @@ void	_thread_lock(struct thread *);
 #define _mtx_release_lock(mp, tid)					\
 	atomic_cmpset_rel_ptr(&(mp)->mtx_lock, (tid), MTX_UNOWNED)
 
-/* Release mtx_lock quickly, assuming we own it. */
-#define _mtx_release_lock_quick(mp)					\
-	atomic_store_rel_ptr(&(mp)->mtx_lock, MTX_UNOWNED)
-
 #define	_mtx_release_lock_fetch(mp, vp)					\
 	atomic_fcmpset_rel_ptr(&(mp)->mtx_lock, (vp), MTX_UNOWNED)
 
@@ -332,7 +328,7 @@ void	_thread_lock(struct thread *);
 		(mp)->mtx_recurse--;					\
 	else {								\
 		LOCKSTAT_PROFILE_RELEASE_SPIN_LOCK(spin__release, mp);	\
-		_mtx_release_lock_quick((mp));				\
+		atomic_store_rel_ptr(&(mp)->mtx_lock, MTX_UNOWNED);	\
 	}								\
 	spinlock_exit();						\
 })