diff --git a/module/zfs/arc.c b/module/zfs/arc.c
index e32707bbe5..c50228a268 100644
--- a/module/zfs/arc.c
+++ b/module/zfs/arc.c
@@ -4465,7 +4465,7 @@ arc_evict(void)
 	 */
 	int64_t prune = 0;
 	int64_t dn = wmsum_value(&arc_sums.arcstat_dnode_size);
-	w = wt * (arc_meta >> 16) >> 16;
+	w = wt * (int64_t)(arc_meta >> 16) >> 16;
 	if (zfs_refcount_count(&arc_mru->arcs_size[ARC_BUFC_METADATA]) +
 	    zfs_refcount_count(&arc_mfu->arcs_size[ARC_BUFC_METADATA]) -
 	    zfs_refcount_count(&arc_mru->arcs_esize[ARC_BUFC_METADATA]) -
@@ -4481,7 +4481,7 @@ arc_evict(void)
 		arc_prune_async(prune);
 
 	/* Evict MRU metadata. */
-	w = wt * (arc_meta * arc_pm >> 48) >> 16;
+	w = wt * (int64_t)(arc_meta * arc_pm >> 48) >> 16;
 	e = MIN((int64_t)(asize - arc_c), (int64_t)(mrum - w));
 	bytes = arc_evict_impl(arc_mru, ARC_BUFC_METADATA, e);
 	total_evicted += bytes;
@@ -4489,7 +4489,7 @@ arc_evict(void)
 	asize -= bytes;
 
 	/* Evict MFU metadata. */
-	w = wt * (arc_meta >> 16) >> 16;
+	w = wt * (int64_t)(arc_meta >> 16) >> 16;
 	e = MIN((int64_t)(asize - arc_c), (int64_t)(m - w));
 	bytes = arc_evict_impl(arc_mfu, ARC_BUFC_METADATA, e);
 	total_evicted += bytes;
@@ -4498,7 +4498,7 @@ arc_evict(void)
 
 	/* Evict MRU data. */
 	wt -= m - total_evicted;
-	w = wt * (arc_pd >> 16) >> 16;
+	w = wt * (int64_t)(arc_pd >> 16) >> 16;
 	e = MIN((int64_t)(asize - arc_c), (int64_t)(mrud - w));
 	bytes = arc_evict_impl(arc_mru, ARC_BUFC_DATA, e);
 	total_evicted += bytes;