diff --git a/src/crypto/rx/RxDataset.cpp b/src/crypto/rx/RxDataset.cpp
index 03b0f1559..c207d6f47 100644
--- a/src/crypto/rx/RxDataset.cpp
+++ b/src/crypto/rx/RxDataset.cpp
@@ -174,7 +174,8 @@ void xmrig::RxDataset::setRaw(const void *raw)
         return;
     }
 
-    memcpy(randomx_get_dataset_memory(m_dataset), raw, maxSize());
+    volatile size_t N = maxSize();
+    memcpy(randomx_get_dataset_memory(m_dataset), raw, N);
 }