diff --git a/client.js b/client.js
index 7ed1ec9..9d6e621 100644
--- a/client.js
+++ b/client.js
@@ -90,7 +90,7 @@ const handle_mining_candidate = (request, response) => {
             extraNonce2Size: job.extraNonce2Size,
             height: job.prevhash
         });
-        const b_value = BigInt(job.miningDiff) !== BigInt(0) ? (BigInt(job.nbits).minus(BigInt(1))).multiply(BigInt(job.miningDiff)) : BigInt(job.nbits);
+        const b_value = BigInt(job.miningDiff).equals(BigInt(0)) ? BigInt(job.nbits) : (BigInt(job.nbits).minus(BigInt(1))).multiply(BigInt(job.miningDiff));
         res = res.replace("\"<b_value>\"",
             b_value.toString()
         );
diff --git a/package.json b/package.json
index 4867be8..0836d2b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "client",
-  "version": "1.0.0",
+  "version": "1.0.3",
   "dependencies": {
     "argparse": "^2.0.1",
     "big-integer": "^1.6.48",