diff --git a/scripts/pvsqueeze.sh b/scripts/pvsqueeze.sh
index 05b762a..e612851 100644
--- a/scripts/pvsqueeze.sh
+++ b/scripts/pvsqueeze.sh
@@ -1,10 +1,14 @@
 #!/bin/bash
 #
-# pvsqueeze - Squeeze PEs into free holes
+# pvsqueeze - Squeeze linear extents into free holes
 #
-# This script iteratively moves linear (allocated to LV) PEs to fill in free
-# holes found in a PV segement map. The end result is that all free PEs are
-# at the end of the PV. Use this script as required in anger!
+# This script iteratively moves linear (allocated to LV) extents to fill in
+# free holes found in a PV segment map. The end result is that all free
+# extents are at the end of the PV. Use this script in anger as required!
+#
+# The script outputs the PV segment map before moving anything, then iterates
+# stuffing extents in each free hole until there are no more except for the
+# last one, and finally outputs the PV segment map again showing the changes.
 #
 
 # Usage
@@ -51,6 +55,7 @@ while true; do
   [[ $free_start -gt $move_start ]] && break
 
   # Move last linear PEs to the free segment
+  [[ $free_size -gt $move_size ]] && free_size=$move_size
   from_range="$pvdev:$((move_start+move_size-free_size))-$((move_start+move_size-1))"
   to_range="$pvdev:$((free_start))-$((free_start+free_size))"
   echo "Moving $from_range to $to_range..."