diff --git a/src/views/Instance/data.js b/src/views/Instance/data.js
index 93d67bdd5..d925739a9 100644
--- a/src/views/Instance/data.js
+++ b/src/views/Instance/data.js
@@ -12,7 +12,7 @@ import {
   getDefaultHiddenStyle,
 } from './styleCytoViz';
 
-const _formatLabelWithNewlines = (label) => label?.replace(/[_|\s]/g, '\n') || '';
+const _formatLabelWithNewlines = (label) => String(label ?? '').replace(/[_|\s]/g, '\n');
 
 const _forgeCytoscapeNodeData = (node, classes, nodesGroupMetadata = {}, nodesParentsDict = {}) => {
   const parent = nodesParentsDict[node.id];