diff --git a/src/api/install.ts b/src/api/install.ts
index 336642de77..ca65eeecce 100644
--- a/src/api/install.ts
+++ b/src/api/install.ts
@@ -64,7 +64,7 @@ export type InstalledPackages = {
 
 export type TreeNode = {
   nodeId: string,
-  children: {[alias: string]: string}, // child nodeId by child alias name
+  children: () => {[alias: string]: string}, // child nodeId by child alias name
   pkg: InstalledPackage,
   depth: number,
   installable: boolean,
@@ -440,10 +440,8 @@ async function installInContext (
     installCtx.tree[nodeToBuild.nodeId] = {
       nodeId: nodeToBuild.nodeId,
       pkg: nodeToBuild.pkg,
-      get children() {
-        return buildTree(installCtx, nodeToBuild.nodeId, nodeToBuild.pkg.id,
-          installCtx.childrenByParentId[nodeToBuild.pkg.id], nodeToBuild.depth + 1, nodeToBuild.installable)
-      },
+      children: () => buildTree(installCtx, nodeToBuild.nodeId, nodeToBuild.pkg.id,
+        installCtx.childrenByParentId[nodeToBuild.pkg.id], nodeToBuild.depth + 1, nodeToBuild.installable),
       depth: nodeToBuild.depth,
       installable: nodeToBuild.installable,
     }
@@ -658,9 +656,7 @@ function buildTree (
     ctx.tree[childNodeId] = {
       nodeId: childNodeId,
       pkg: ctx.installs[child.pkgId],
-      get children() {
-        return buildTree(ctx, childNodeId, child.pkgId, ctx.childrenByParentId[child.pkgId], depth + 1, installable);
-      },
+      children: () => buildTree(ctx, childNodeId, child.pkgId, ctx.childrenByParentId[child.pkgId], depth + 1, installable),
       depth,
       installable,
     }
diff --git a/src/install/installMultiple.ts b/src/install/installMultiple.ts
index 7ca78c14c0..31de997c03 100644
--- a/src/install/installMultiple.ts
+++ b/src/install/installMultiple.ts
@@ -426,7 +426,7 @@ async function install (
     ctx.tree[nodeId] = {
       nodeId,
       pkg: ctx.installs[fetchedPkg.id],
-      children: children.reduce((children, child) => {
+      children: () => children.reduce((children, child) => {
         children[child.alias] = child.nodeId
         return children
       }, {}),
diff --git a/src/link/resolvePeers.ts b/src/link/resolvePeers.ts
index 2809ae87da..085756f046 100644
--- a/src/link/resolvePeers.ts
+++ b/src/link/resolvePeers.ts
@@ -125,14 +125,15 @@ function resolvePeersOfNode (
     return {}
   }
 
-  const parentPkgs = R.isEmpty(node.children)
+  const children = node.children();
+  const parentPkgs = R.isEmpty(children)
     ? parentParentPkgs
     : Object.assign(
         {},
         parentParentPkgs,
-        toPkgByName(R.keys(node.children).map(alias => ({alias: alias, node: ctx.tree[node.children[alias]]})))
+        toPkgByName(R.keys(children).map(alias => ({alias: alias, node: ctx.tree[children[alias]]})))
     )
-  const unknownResolvedPeersOfChildren = resolvePeersOfChildren(node.children, parentPkgs, ctx, nodeId)
+  const unknownResolvedPeersOfChildren = resolvePeersOfChildren(children, parentPkgs, ctx, nodeId)
 
   const resolvedPeers = R.isEmpty(node.pkg.peerDependencies)
     ? {}
@@ -177,7 +178,7 @@ function resolvePeersOfNode (
       hardlinkedLocation,
       independent,
       optionalDependencies: node.pkg.optionalDependencies,
-      children: Object.assign(node.children, resolvedPeers),
+      children: Object.assign(children, resolvedPeers),
       depth: node.depth,
       absolutePath,
       prod: node.pkg.prod,