diff --git a/lib/pool.js b/lib/pool.js
index ca71820f..16255d02 100644
--- a/lib/pool.js
+++ b/lib/pool.js
@@ -612,7 +612,8 @@ function processShare(miner, job, blockTemplate, params) {
     }
     else {
         convertedBlob = global.coinFuncs.convertBlob(shareBuffer);
-        hash = global.coinFuncs.cryptoNight(convertedBlob);
+        let cn_variant = convertedBlob[0] >= 7 ? convertedBlob[0] - 6 : 0;
+        hash = global.coinFuncs.cryptoNight(convertedBlob, cn_variant);
         shareType = false;
     }
     if (hash.toString('hex') !== resultHash) {