diff --git a/metrics/pve_node_storage_collector.go b/metrics/pve_node_storage_collector.go
index 040b5cc..b1779db 100644
--- a/metrics/pve_node_storage_collector.go
+++ b/metrics/pve_node_storage_collector.go
@@ -85,7 +85,7 @@ func (c *PveStorageCollector) CollectMetrics() error {
 				"node":    node.Name,
 				"storage": storage.Storage,
 				"type":    storage.Type,
-				"content": storage.Content,
+				"content": storage.GetContentSorted(),
 				"shared":  strconv.Itoa(storage.Shared),
 			}
 
diff --git a/proxmox/model.go b/proxmox/model.go
index 96006d2..1494df5 100644
--- a/proxmox/model.go
+++ b/proxmox/model.go
@@ -3,6 +3,8 @@ package proxmox
 import (
 	"errors"
 	"fmt"
+	"sort"
+	"strings"
 )
 
 // PveVersion represents the version information of a PVE (Proxmox Virtual Environment).
@@ -492,3 +494,11 @@ func (r *PveClusterStatus) GetClusterName() string {
 	}
 	return r.Name
 }
+
+// GetContentSorted returns sorted storage content.
+// This is crucial for labeling because PVE API returns these walues randomly sorted.
+func (r *PveStorage) GetContentSorted() string {
+	parts := strings.Split(r.Content, ",")
+	sort.Strings(parts)
+	return strings.Join(parts, ",")
+}