diff --git a/x-pack/plugins/endpoint/common/generate_data.ts b/x-pack/plugins/endpoint/common/generate_data.ts
index f5ed6da197273..75351bb3bf07d 100644
--- a/x-pack/plugins/endpoint/common/generate_data.ts
+++ b/x-pack/plugins/endpoint/common/generate_data.ts
@@ -325,7 +325,7 @@ export class EndpointDocGenerator {
     for (let i = 0; i < generations; i++) {
       const newParents: EndpointEvent[] = [];
       parents.forEach(element => {
-        const numChildren = this.randomN(maxChildrenPerNode);
+        const numChildren = this.randomN(maxChildrenPerNode + 1);
         for (let j = 0; j < numChildren; j++) {
           timestamp = timestamp + 1000;
           const child = this.generateEvent({
diff --git a/x-pack/plugins/endpoint/scripts/resolver_generator.ts b/x-pack/plugins/endpoint/scripts/resolver_generator.ts
index 503999daec587..3d11ccaad005d 100644
--- a/x-pack/plugins/endpoint/scripts/resolver_generator.ts
+++ b/x-pack/plugins/endpoint/scripts/resolver_generator.ts
@@ -131,8 +131,13 @@ async function main() {
       process.exit(1);
     }
   }
-
-  const generator = new EndpointDocGenerator(argv.seed);
+  let seed = argv.seed;
+  if (!seed) {
+    seed = Math.random().toString();
+    // eslint-disable-next-line no-console
+    console.log('No seed supplied, using random seed: ' + seed);
+  }
+  const generator = new EndpointDocGenerator(seed);
   for (let i = 0; i < argv.numHosts; i++) {
     await client.index({
       index: argv.metadataIndex,