diff --git a/pcp/PCPProcessList.c b/pcp/PCPProcessList.c
index 0e7b26d5..a823695e 100644
--- a/pcp/PCPProcessList.c
+++ b/pcp/PCPProcessList.c
@@ -737,39 +737,35 @@ static inline void PCPProcessList_scanZfsArcstats(PCPProcessList* this) {
    unsigned long long int dbufSize = 0;
    unsigned long long int dnodeSize = 0;
    unsigned long long int bonusSize = 0;
-   pmAtomValue value,
-               comp,
-               uncomp;
+   pmAtomValue value;
 
+   memset(&this->zfs, 0, sizeof(ZfsArcStats));
    if (Metric_values(PCP_ZFS_ARC_ANON_SIZE, &value, 1, PM_TYPE_U64))
-      this->zfs.anon = value.ull / 1024;
+      this->zfs.anon = value.ull / ONE_K;
    if (Metric_values(PCP_ZFS_ARC_C_MAX, &value, 1, PM_TYPE_U64))
-      this->zfs.max = value.ull / 1024;
+      this->zfs.max = value.ull / ONE_K;
    if (Metric_values(PCP_ZFS_ARC_BONUS_SIZE, &value, 1, PM_TYPE_U64))
-      bonusSize = value.ull / 1024;
+      bonusSize = value.ull / ONE_K;
    if (Metric_values(PCP_ZFS_ARC_DBUF_SIZE, &value, 1, PM_TYPE_U64))
-      dbufSize = value.ull / 1024;
+      dbufSize = value.ull / ONE_K;
    if (Metric_values(PCP_ZFS_ARC_DNODE_SIZE, &value, 1, PM_TYPE_U64))
-      dnodeSize = value.ull / 1024;
-   if (Metric_values(PCP_ZFS_ARC_COMPRESSED_SIZE, &comp, 1, PM_TYPE_U64)) {
-      this->zfs.isCompressed = 1;
-   }
-   if (Metric_values(PCP_ZFS_ARC_UNCOMPRESSED_SIZE, &uncomp, 1, PM_TYPE_U64))
+      dnodeSize = value.ull / ONE_K;
+   if (Metric_values(PCP_ZFS_ARC_COMPRESSED_SIZE, &value, 1, PM_TYPE_U64))
+      this->zfs.compressed = value.ull / ONE_K;
+   if (Metric_values(PCP_ZFS_ARC_UNCOMPRESSED_SIZE, &value, 1, PM_TYPE_U64))
+      this->zfs.uncompressed = value.ull / ONE_K;
    if (Metric_values(PCP_ZFS_ARC_HDR_SIZE, &value, 1, PM_TYPE_U64))
-      this->zfs.header = value.ull / 1024;
+      this->zfs.header = value.ull / ONE_K;
    if (Metric_values(PCP_ZFS_ARC_MFU_SIZE, &value, 1, PM_TYPE_U64))
-      this->zfs.MFU = value.ull / 1024;
+      this->zfs.MFU = value.ull / ONE_K;
    if (Metric_values(PCP_ZFS_ARC_MRU_SIZE, &value, 1, PM_TYPE_U64))
-      this->zfs.MRU = value.ull / 1024;
+      this->zfs.MRU = value.ull / ONE_K;
    if (Metric_values(PCP_ZFS_ARC_SIZE, &value, 1, PM_TYPE_U64))
-      this->zfs.size = value.ull / 1024;
+      this->zfs.size = value.ull / ONE_K;
 
-   this->zfs.enabled = (this->zfs.size > 0 ? 1 : 0);
-   this->zfs.other   = (dbufSize + dnodeSize + bonusSize) / 1024;
-   if ( this->zfs.isCompressed ) {
-      this->zfs.compressed =  comp.ull /1024;
-      this->zfs.uncompressed = uncomp.ull /1024;
-   }
+   this->zfs.other = (dbufSize + dnodeSize + bonusSize) / ONE_K;
+   this->zfs.enabled = (this->zfs.size > 0);
+   this->zfs.isCompressed = (this->zfs.compressed > 0);
 }
 
 void ProcessList_goThroughEntries(ProcessList* super, bool pauseProcessUpdate) {