diff --git a/zxfer b/zxfer
index 12ee686..b4f6d92 100755
--- a/zxfer
+++ b/zxfer
@@ -411,7 +411,7 @@ copy_snap() {
           echo "Estimated size is: ${SIZE_EST}"
           PROGRESS_DIALOG=$( echo "$option_D" | sed "s#%%size%%#$SIZE_EST#g" | \
             sed "s#%%title%%#$copysrc#g" )
-          $LZFS send "$copysrc" | dd obs=1m | dd bs=1m | $PROGRESS_DIALOG | \
+          $LZFS send "$copysrc" | dd obs=1048576 | dd bs=1048576 | $PROGRESS_DIALOG | \
             $RZFS receive $option_F "$copydest" || \
             { echo "Error when zfs send/receiving."; beep; exit 1; }
         else
@@ -422,7 +422,7 @@ copy_snap() {
           PROGRESS_DIALOG=$( echo $option_D | sed "s#%%size%%#$SIZE_EST#g" | \
             sed "s#%%title%%#$copysrc#g" )
           $LZFS send -nv "$copysrc"
-          echo "$LZFS send $copysrc | dd obs=1m | dd bs=1m | $PROGRESS_DIALOG |
+          echo "$LZFS send $copysrc | dd obs=1048576 | dd bs=1048576 | $PROGRESS_DIALOG |
             $RZFS receive $option_F $copydest"
         fi
       else
@@ -443,7 +443,7 @@ copy_snap() {
           echo "Estimated size is: ${SIZE_EST}"
           PROGRESS_DIALOG=$( echo $option_D | sed "s#%%size%%#$SIZE_EST#g" | \
             sed "s#%%title%%#$copysrc#g" )
-          $LZFS send -i "$copyprev" "$copysrc" | dd obs=1m | dd bs=1m | \
+          $LZFS send -i "$copyprev" "$copysrc" | dd obs=1048576 | dd bs=1048576 | \
             $PROGRESS_DIALOG | $RZFS receive $option_F "$copydest" || \
             { echo "Error when zfs send/receiving."; beep; exit 1; }
         else
@@ -454,7 +454,7 @@ copy_snap() {
           PROGRESS_DIALOG=$( echo $option_D | sed "s#%%size%%#$SIZE_EST#g" | \
             sed "s#%%title%%#$copysrc#g" )
           $LZFS send -nv -i "$copyprev" "$copysrc"
-          echo "$LZFS send -i $copyprev $copysrc | dd obs=1m | dd bs=1m | \
+          echo "$LZFS send -i $copyprev $copysrc | dd obs=1048576 | dd bs=1048576 | \
             $PROGRESS_DIALOG | $RZFS receive $option_F $copydest"      
         fi
       else