diff --git a/common/src/util/random.ts b/common/src/util/random.ts
index de7d5729da..455196d089 100644
--- a/common/src/util/random.ts
+++ b/common/src/util/random.ts
@@ -5,11 +5,12 @@ export function sampleSizeWithSeed<T>(
   size: number,
   seed: string,
 ): T[] {
+  const safeSize = Number.isFinite(size) && size >= 0 ? Math.floor(size) : 0
   const rng = seedrandom(seed)
   const result = array.slice()
   for (let i = result.length - 1; i > 0; i--) {
     const j = Math.floor(rng() * (i + 1))
     ;[result[i], result[j]] = [result[j], result[i]]
   }
-  return result.slice(0, size)
+  return result.slice(0, safeSize)
 }