diff --git a/libs/common/src/tools/generator/random.ts b/libs/common/src/tools/generator/random.ts
index 6b72e3cd91..1400ed1175 100644
--- a/libs/common/src/tools/generator/random.ts
+++ b/libs/common/src/tools/generator/random.ts
@@ -31,9 +31,9 @@ export class CryptoServiceRandomizer implements Randomizer {
   async shuffle<T>(items: Array<T>, options?: { copy?: boolean }) {
     const shuffled = options?.copy ?? true ? [...items] : items;
 
-    for (let i = items.length - 1; i > 0; i--) {
+    for (let i = shuffled.length - 1; i > 0; i--) {
       const j = await this.uniform(0, i);
-      [items[i], items[j]] = [items[j], items[i]];
+      [shuffled[i], shuffled[j]] = [shuffled[j], shuffled[i]];
     }
 
     return shuffled;
diff --git a/libs/tools/generator/core/src/engine/crypto-service-randomizer.ts b/libs/tools/generator/core/src/engine/crypto-service-randomizer.ts
index a15440836d..5320fad681 100644
--- a/libs/tools/generator/core/src/engine/crypto-service-randomizer.ts
+++ b/libs/tools/generator/core/src/engine/crypto-service-randomizer.ts
@@ -31,9 +31,9 @@ export class CryptoServiceRandomizer implements Randomizer {
   async shuffle<T>(items: Array<T>, options?: { copy?: boolean }) {
     const shuffled = options?.copy ?? true ? [...items] : items;
 
-    for (let i = items.length - 1; i > 0; i--) {
+    for (let i = shuffled.length - 1; i > 0; i--) {
       const j = await this.uniform(0, i);
-      [items[i], items[j]] = [items[j], items[i]];
+      [shuffled[i], shuffled[j]] = [shuffled[j], shuffled[i]];
     }
 
     return shuffled;