diff --git a/packages/server/src/util/oshash.ts b/packages/server/src/util/oshash.ts
index 1dd78cb..c2a9105 100644
--- a/packages/server/src/util/oshash.ts
+++ b/packages/server/src/util/oshash.ts
@@ -20,6 +20,10 @@ export async function oshash(
     let hash = BigInt(st.size);
 
     if (st.size < minFileSize){
+        if (st.size < 8) {
+            fd.close();
+            throw new Error("Too short to hash");
+        }
         // Although the original oshash algorithm should throw an exception, 
         // just applying the hash function. 
         const chunk = new Uint8Array(st.size);