diff --git a/bigboot_execute_resize.yml b/bigboot_execute_resize.yml
index b9d7892..54d774d 100644
--- a/bigboot_execute_resize.yml
+++ b/bigboot_execute_resize.yml
@@ -20,7 +20,7 @@
       vars:
         shrink_lv_devices:
           - device: "{{ bigboot_data[inventory_hostname]['bigboot_adjacent_lvm_device'] }}"
-            size: "{{ bigboot_data[inventory_hostname]['bigboot_lv_shrink_size'] | int }}"
+            size: "{{ bigboot_data[inventory_hostname]['bigboot_lv_shrink_size'] | int - 4194304 }}"
       when:
         - bigboot_data[inventory_hostname]['bigboot_execute_shrink_lv'] | default(false) | bool