diff --git a/src/entities/BlockNode/index.ts b/src/entities/BlockNode/index.ts
index fd69afc6..973e6bec 100644
--- a/src/entities/BlockNode/index.ts
+++ b/src/entities/BlockNode/index.ts
@@ -59,6 +59,10 @@ export class BlockNode {
       .entries(this.#data)
       .reduce(
         (acc, [dataKey, value]) => {
+          /**
+           * If the value is an array, we need to serialize each node in the array
+           * Value is an array if the BlockNode contains TextNodes and FormattingNodes
+           */
           if (value instanceof Array) {
             acc[dataKey] = value.map((node) => node.serialized);