diff --git a/lazy.go b/lazy.go
index 6c38fe0..525c23f 100644
--- a/lazy.go
+++ b/lazy.go
@@ -171,9 +171,10 @@ func RandomStruct(c StructConfig) (*StructMock, error) {
 	}
 
 	//convert reflect.Value to []any
-	retStructs := make([]any, 0)
-	for x := 0; x < filled.Len(); x++ {
-		retStructs = append(retStructs, filled.Index(x).Interface())
+	fl := filled.Len()
+	retStructs := make([]any, fl)
+	for x := 0; x < fl; x++ {
+		retStructs[x] = filled.Index(x).Interface()
 	}
 
 	return &StructMock{