diff --git a/sys/kern/kern_subr.c b/sys/kern/kern_subr.c
index 48c3af4ecefe..a1c90fdfb33c 100644
--- a/sys/kern/kern_subr.c
+++ b/sys/kern/kern_subr.c
@@ -211,8 +211,7 @@ uiomove_frombuf(void *buf, int buflen, struct uio *uio)
  * Experimental support for zero-copy I/O
  */
 static int
-userspaceco(void *cp, u_int cnt, struct uio *uio, struct vm_object *obj,
-    int disposable)
+userspaceco(void *cp, u_int cnt, struct uio *uio, int disposable)
 {
 	struct iovec *iov;
 	int error;
@@ -220,7 +219,6 @@ userspaceco(void *cp, u_int cnt, struct uio *uio, struct vm_object *obj,
 	iov = uio->uio_iov;
 	if (uio->uio_rw == UIO_READ) {
 		if ((so_zero_copy_receive != 0)
-		 && (obj == NULL)
 		 && ((cnt & PAGE_MASK) == 0)
 		 && ((((intptr_t) iov->iov_base) & PAGE_MASK) == 0)
 		 && ((uio->uio_offset & PAGE_MASK) == 0)
@@ -254,8 +252,7 @@ userspaceco(void *cp, u_int cnt, struct uio *uio, struct vm_object *obj,
 }
 
 int
-uiomoveco(void *cp, int n, struct uio *uio, struct vm_object *obj,
-    int disposable)
+uiomoveco(void *cp, int n, struct uio *uio, int disposable)
 {
 	struct iovec *iov;
 	u_int cnt;
@@ -283,7 +280,7 @@ uiomoveco(void *cp, int n, struct uio *uio, struct vm_object *obj,
 			if (ticks - PCPU_GET(switchticks) >= hogticks)
 				uio_yield();
 
-			error = userspaceco(cp, cnt, uio, obj, disposable);
+			error = userspaceco(cp, cnt, uio, disposable);
 
 			if (error)
 				return (error);
diff --git a/sys/kern/uipc_socket.c b/sys/kern/uipc_socket.c
index b741f41f56bb..7982deac959a 100644
--- a/sys/kern/uipc_socket.c
+++ b/sys/kern/uipc_socket.c
@@ -902,8 +902,7 @@ soreceive_rcvoob(so, uio, flags)
 
 			error = uiomoveco(mtod(m, void *),
 					  min(uio->uio_resid, m->m_len),
-					  uio, pg->object,
-					  disposable);
+					  uio, disposable);
 		} else
 #endif /* ZERO_COPY_SOCKETS */
 		error = uiomove(mtod(m, void *),
@@ -1246,7 +1245,7 @@ soreceive(so, psa, uio, mp0, controlp, flagsp)
 					uio->uio_offset =IDX_TO_OFF(pg->pindex);
 
 				error = uiomoveco(mtod(m, char *) + moff,
-						  (int)len, uio,pg->object,
+						  (int)len, uio,
 						  disposable);
 			} else
 #endif /* ZERO_COPY_SOCKETS */
diff --git a/sys/sys/uio.h b/sys/sys/uio.h
index f89c9c4c9d64..9dd827f4f76a 100644
--- a/sys/sys/uio.h
+++ b/sys/sys/uio.h
@@ -94,8 +94,7 @@ int	uiomove(void *cp, int n, struct uio *uio);
 int	uiomove_frombuf(void *buf, int buflen, struct uio *uio);
 int	uiomove_fromphys(struct vm_page *ma[], vm_offset_t offset, int n,
 	    struct uio *uio);
-int	uiomoveco(void *cp, int n, struct uio *uio, struct vm_object *obj,
-	    int disposable);
+int	uiomoveco(void *cp, int n, struct uio *uio, int disposable);
 
 #else /* !_KERNEL */