diff --git a/tasks/capture_lv_device_details.yml b/tasks/capture_lv_device_details.yml
index a0d413b..c220899 100644
--- a/tasks/capture_lv_device_details.yml
+++ b/tasks/capture_lv_device_details.yml
@@ -73,9 +73,6 @@
   ansible.builtin.debug:
     msg: "{{ bigboot_lv_shrink_size | int | human_readable(unit='G') }} ({{ bigboot_lv_shrink_size | int | human_readable(unit='M') | regex_replace('\\.\\d+\\s+MB') | int | get_block_size_down }}) <-> {{ bigboot_size_target_fallback }} | {{ bigboot_expansion_diff }}"
 
-# - name: Kill the play
-#   ansible.builtin.meta: end_host
-
 - name: Capture logical volume name
   ansible.builtin.shell:
     cmd: |
@@ -98,6 +95,26 @@
   changed_when: false
   register: bigboot_lv_vg_free_pe
 
+- name: Capture volume group PE size
+  ansible.builtin.shell:
+    cmd: |
+      set -o pipefail
+      vgdisplay {{ bigboot_lv_vg_name | trim }} | grep -i 'pe size'
+    executable: /bin/bash
+  changed_when: false
+  register: bigboot_lv_vg_pe_capture
+
+- name: Set PE size
+  ansible.builtin.set_fact:
+    bigboot_lv_vg_pe_size: "{{ bigboot_lv_vg_pe_capture | regex_replace('^.*\\s+(\\d+.\\d+).*$', '\\1M') | human_to_bytes }}"
+
+- name: Subtract one additional PE for shrinking
+  ansible.builtin.set_fact:
+    bigboot_lv_shrink_size: "{{ bigboot_lv_shrink_size | int - bigboot_lv_vg_pe_size | int }}"
+
+# - name: Kill the play
+#   ansible.builtin.meta: end_host
+
 - name: Capture the PV device
   ansible.builtin.set_fact:
     bigboot_pv: "{{ bigboot_boot_mount['device'][:-1] }}{{ bigboot_boot_mount['device'][-1:] | int + 1 }}"