diff --git a/sys/mips/mips/mem.c b/sys/mips/mips/mem.c
index 7529a9ed503..d40c424888a 100644
--- a/sys/mips/mips/mem.c
+++ b/sys/mips/mips/mem.c
@@ -87,6 +87,7 @@ memrw(struct cdev *dev, struct uio *uio, int flags)
 
 	GIANT_REQUIRED;
 
+	pmap_page_init(&m);
 	while (uio->uio_resid > 0 && !error) {
 		iov = uio->uio_iov;
 		if (iov->iov_len == 0) {