diff --git a/waku/v2/peermanager/service_slot_test.go b/waku/v2/peermanager/service_slot_test.go
index b97c231e..5b7ac986 100644
--- a/waku/v2/peermanager/service_slot_test.go
+++ b/waku/v2/peermanager/service_slot_test.go
@@ -1,12 +1,11 @@
 package peermanager
 
 import (
-	"testing"
-
 	"github.com/libp2p/go-libp2p/core/peer"
 	libp2pProtocol "github.com/libp2p/go-libp2p/core/protocol"
 	"github.com/stretchr/testify/require"
 	"golang.org/x/exp/maps"
+	"testing"
 )
 
 func TestServiceSlot(t *testing.T) {
@@ -41,8 +40,10 @@ func TestServiceSlot(t *testing.T) {
 	require.NoError(t, err)
 	require.Equal(t, 2, len(maps.Keys(fetchedPeers)))
 
+	fetchedPeersSerialized := maps.Keys(fetchedPeers)
+
 	// Check for uniqueness
-	require.NotEqual(t, maps.Keys(fetchedPeers)[0], maps.Keys(fetchedPeers)[1])
+	require.NotEqual(t, fetchedPeersSerialized[0], fetchedPeersSerialized[1])
 
 	slots.getPeers(protocol).remove(peerID2)