diff --git a/pkg/rpc/server/da_visualization.go b/pkg/rpc/server/da_visualization.go
index 008f88f40..e14a06910 100644
--- a/pkg/rpc/server/da_visualization.go
+++ b/pkg/rpc/server/da_visualization.go
@@ -8,6 +8,7 @@ import (
 	"fmt"
 	"html/template"
 	"net/http"
+	"slices"
 	"sync"
 	"time"
 
@@ -199,15 +200,12 @@ func (s *DAVisualizationServer) handleDABlobDetails(w http.ResponseWriter, r *ht
 	if !found {
 		s.mutex.RLock()
 		for _, submission := range s.submissions {
-			for _, subBlobID := range submission.BlobIDs {
-				if subBlobID == blobID {
-					if submission.Namespace != "" {
-						if ns, err := hex.DecodeString(submission.Namespace); err == nil {
-							namespace = ns
-							found = true
-						}
+			if slices.Contains(submission.BlobIDs, blobID) {
+				if submission.Namespace != "" {
+					if ns, err := hex.DecodeString(submission.Namespace); err == nil {
+						namespace = ns
+						found = true
 					}
-					break
 				}
 			}
 			if found {
diff --git a/tools/local-da/rpc.go b/tools/local-da/rpc.go
index 60dd51ac4..e90071efa 100644
--- a/tools/local-da/rpc.go
+++ b/tools/local-da/rpc.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"net/http"
+	"slices"
 	"time"
 
 	libshare "github.com/celestiaorg/go-square/v3/share"
@@ -93,11 +94,8 @@ func (s *blobServer) GetAll(_ context.Context, height uint64, namespaces []libsh
 
 	out := make([]*jsonrpc.Blob, 0, len(blobs))
 	for _, b := range blobs {
-		for _, ns := range namespaces {
-			if b.Namespace().Equals(ns) {
-				out = append(out, b)
-				break
-			}
+		if b != nil && slices.ContainsFunc(namespaces, b.Namespace().Equals) {
+			out = append(out, b)
 		}
 	}