diff --git a/sys/kern/subr_vmem.c b/sys/kern/subr_vmem.c
index 06c104b9fce..507c8ad897e 100644
--- a/sys/kern/subr_vmem.c
+++ b/sys/kern/subr_vmem.c
@@ -203,7 +203,6 @@ static uma_zone_t vmem_zone;
 #define	VMEM_CONDVAR_BROADCAST(vm)	cv_broadcast(&vm->vm_cv)
 
 #define	VMEM_LOCK(vm)		mtx_lock(&vm->vm_lock)
-#define	VMEM_TRYLOCK(vm)	mtx_trylock(&vm->vm_lock)
 #define	VMEM_UNLOCK(vm)		mtx_unlock(&vm->vm_lock)
 #define	VMEM_LOCK_INIT(vm, name) mtx_init(&vm->vm_lock, (name), NULL, MTX_DEF)
 #define	VMEM_LOCK_DESTROY(vm)	mtx_destroy(&vm->vm_lock)