diff --git a/src/tm_mad/shared/monitor b/src/tm_mad/shared/monitor
index 1c6990d278..c93ccb6352 100755
--- a/src/tm_mad/shared/monitor
+++ b/src/tm_mad/shared/monitor
@@ -85,7 +85,7 @@ for vm in \$vms; do
 
     for disk in \$disks; do
         disk_id="\$(echo "\$disk" | cut -d. -f2)"
-        disk_size="\$(du -mL "\${vmdir}/\${disk}" | awk '{print \$1}')"
+        disk_size="\$(du -mL "\${vmdir}/\${disk}" 2>/dev/null | awk '{print \$1}')"
         snap_dir="\${vmdir}/\${disk}.snap"
 
         [ -z "\$disk_size" ] && continue
@@ -95,7 +95,7 @@ for vm in \$vms; do
             snaps="\$(ls "\$snap_dir" 2>/dev/null | grep '^[0-9]$')"
 
             for snap in \$snaps; do
-                snap_size="\$(du -mL "\${snap_dir}/\${snap}" | awk '{print \$1}')"
+                snap_size="\$(du -mL "\${snap_dir}/\${snap}" 2>/dev/null | awk '{print \$1}')"
                 [ -z "\$snap_size" ] && continue
                 echo -n "SNAPSHOT_SIZE=[ID=\${snap},DISK_ID=\${disk_id},SIZE=\${snap_size}] "
             done
diff --git a/src/tm_mad/ssh/monitor_ds b/src/tm_mad/ssh/monitor_ds
index f01e51328d..dd2f14c66f 100755
--- a/src/tm_mad/ssh/monitor_ds
+++ b/src/tm_mad/ssh/monitor_ds
@@ -30,7 +30,7 @@ for vm in $vms; do
 
     for disk in $disks; do
         disk_id="$(echo "$disk" | cut -d. -f2)"
-        disk_size="$(du -mL "${vmdir}/${disk}" | awk '{print $1}')"
+        disk_size="$(du -mL "${vmdir}/${disk}" 2>/dev/null | awk '{print $1}')"
         snap_dir="${vmdir}/${disk}.snap"
 
         [ -z "$disk_size" ] && continue
@@ -40,7 +40,7 @@ for vm in $vms; do
             snaps="$(ls "$snap_dir" | grep '^[0-9]$')"
 
             for snap in $snaps; do
-                snap_size="$(du -mL "${snap_dir}/${snap}" | awk '{print $1}')"
+                snap_size="$(du -mL "${snap_dir}/${snap}" 2>/dev/null | awk '{print $1}')"
                 [ -z "$snap_size" ] && continue
                 echo -n "SNAPSHOT_SIZE=[ID=${snap},DISK_ID=${disk_id},SIZE=${snap_size}] "
             done