diff --git a/js/src/lib/particle-path.ts b/js/src/lib/particle-path.ts
index ba9412d..bcc2f58 100644
--- a/js/src/lib/particle-path.ts
+++ b/js/src/lib/particle-path.ts
@@ -35,13 +35,13 @@ export function parseParticlePath(path: ParticlePath): {
  * Convert a ParticlePath to the Firestore document path for that particle.
  *
  * Firestore structure:
- *   /net1          → networks/net1/particles          (collection)
- *   /net1/p1       → networks/net1/particles/p1       (document)
- *   /net1/p1/p2    → networks/net1/particles/p1/children/p2  (document)
+ *   /net1          → networks/net1/children          (collection)
+ *   /net1/p1       → networks/net1/children/p1       (document)
+ *   /net1/p1/p2    → networks/net1/children/p1/children/p2  (document)
  */
 export function toFirestoreDocPath(path: ParticlePath): string {
   const { networkId, segments } = parseParticlePath(path);
-  const base = `networks/${networkId}/particles`;
+  const base = `networks/${networkId}/children`;
   if (segments.length === 0) return base;
 
   const parts: string[] = [base, segments[0]];
@@ -54,9 +54,9 @@ export function toFirestoreDocPath(path: ParticlePath): string {
 /**
  * Convert a ParticlePath to the Firestore collection path for its children.
  *
- *   /net1          → networks/net1/particles                  (root particles)
- *   /net1/p1       → networks/net1/particles/p1/children
- *   /net1/p1/p2    → networks/net1/particles/p1/children/p2/children
+ *   /net1          → networks/net1/children                  (root particles)
+ *   /net1/p1       → networks/net1/children/p1/children
+ *   /net1/p1/p2    → networks/net1/children/p1/children/p2/children
  */
 export function toFirestoreChildrenPath(path: ParticlePath): string {
   const { segments } = parseParticlePath(path);