diff --git a/web/package/agama-web-ui.changes b/web/package/agama-web-ui.changes
index 97431b1c07..17086b0b92 100644
--- a/web/package/agama-web-ui.changes
+++ b/web/package/agama-web-ui.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Mon Mar 16 10:53:53 UTC 2026 - Ancor Gonzalez Sosa <ancor@suse.com>
+
+- Prevent error when displaying reused LVM VGs (related to
+  gh#agama-project/agama#3210, jsc#PED-15104, bsc#1254718 and
+  gh#agama-project/agama#3171).
+
 -------------------------------------------------------------------
 Fri Mar 13 15:54:03 UTC 2026 - Ancor Gonzalez Sosa <ancor@suse.com>
 
diff --git a/web/src/model/storage/devices-manager.ts b/web/src/model/storage/devices-manager.ts
index c77e0350e1..20878a3758 100644
--- a/web/src/model/storage/devices-manager.ts
+++ b/web/src/model/storage/devices-manager.ts
@@ -100,6 +100,7 @@ export default class DevicesManager {
     const stagingDevice = this.stagingDevice(device.sid);
 
     if (!systemDevice || !stagingDevice) return 0;
+    if (!systemDevice.block) return 0;
 
     const amount = systemDevice.block.size - stagingDevice.block.size;
     return amount > 0 ? amount : 0;