diff --git a/plugins/zfs/zfs_stats_ b/plugins/zfs/zfs_stats_
index d218e46d..bef05684 100755
--- a/plugins/zfs/zfs_stats_
+++ b/plugins/zfs/zfs_stats_
@@ -83,13 +83,13 @@ MOST_RECENTLY_USED_GHOST_PERC=`echo "scale=2 ; (100*$MRU_GHOST_HITS/$ARC_HITS)"
 MOST_FREQUENTLY_USED_GHOST_PERC=`echo "scale=2 ; (100*$MFU_GHOST_HITS/$ARC_HITS)" | $BC`
 
 DEMAND_DATA_HIT_PERC=`echo "scale=2 ; (100*$DEMAND_DATA_HITS/$ARC_HITS)" | $BC`
-DEMAND_DATA_MISS_PERC=`echo "scale=2 ; (100*$DEMAND_DATA_MISSES/$ARC_HITS)" | $BC`
+DEMAND_DATA_MISS_PERC=`echo "scale=2 ; (100*$DEMAND_DATA_MISSES/$ARC_MISSES)" | $BC`
 PREFETCH_DATA_HIT_PERC=`echo "scale=2 ; (100*$PREFETCH_DATA_HITS/$ARC_HITS)" | $BC`
-PREFETCH_DATA_MISS_PERC=`echo "scale=2 ; (100*$PREFETCH_DATA_MISSES/$ARC_HITS)" | $BC`
+PREFETCH_DATA_MISS_PERC=`echo "scale=2 ; (100*$PREFETCH_DATA_MISSES/$ARC_MISSES)" | $BC`
 DEMAND_METADATA_HIT_PERC=`echo "scale=2 ; (100*$DEMAND_METADATA_HITS/$ARC_HITS)" | $BC`
-DEMAND_METADATA_MISS_PERC=`echo "scale=2 ; (100*$DEMAND_METADATA_MISSES/$ARC_HITS)" | $BC`
+DEMAND_METADATA_MISS_PERC=`echo "scale=2 ; (100*$DEMAND_METADATA_MISSES/$ARC_MISSES)" | $BC`
 PREFETCH_METADATA_HIT_PERC=`echo "scale=2 ; (100*$PREFETCH_METADATA_HITS/$ARC_HITS)" | $BC`
-PREFETCH_METADATA_MISSES_PERC=`echo "scale=2 ; (100*$PREFETCH_METADATA_MISSES/$ARC_HITS)" | $BC`
+PREFETCH_METADATA_MISSES_PERC=`echo "scale=2 ; (100*$PREFETCH_METADATA_MISSES/$ARC_MISSES)" | $BC`
 
 DMU_TOTAL=`echo "$DMU_HITS+$DMU_MISSES" | $BC`
 DMU_HITS_PERC=`echo "scale=2 ; (100*$DMU_HITS/$DMU_TOTAL)" | $BC`