diff --git a/external/src/hardforks/hardforks.h b/external/src/hardforks/hardforks.h
index 53f14b8..4cd6816 100644
--- a/external/src/hardforks/hardforks.h
+++ b/external/src/hardforks/hardforks.h
@@ -31,6 +31,11 @@
 #include <stdint.h>
 #include <time.h>
 
+#ifdef _MSC_VER
+#pragma warning(push)
+#pragma warning(disable: 4820) // padding warnings
+#endif
+
 struct hardfork_t
 {
   uint8_t version;
@@ -40,6 +45,10 @@ struct hardfork_t
   hardfork_t(uint8_t version, uint64_t height, uint8_t threshold, time_t time): version(version), height(height), threshold(threshold), time(time) {}
 };
 
+#ifdef _MSC_VER
+#pragma warning(pop)
+#endif
+
 extern const hardfork_t mainnet_hard_forks[];
 extern const uint64_t mainnet_hard_fork_version_1_till;
 extern const size_t num_mainnet_hard_forks;
diff --git a/src/pool_block.cpp b/src/pool_block.cpp
index b6e8df7..c3c08ac 100644
--- a/src/pool_block.cpp
+++ b/src/pool_block.cpp
@@ -187,7 +187,7 @@ std::vector<uint8_t> PoolBlock::serialize_mainchain_data(size_t* header_size, si
 
         if (!m_viewTags.empty() && m_viewTags[0].size() >= 3) {
             char buf[16]; snprintf(buf, sizeof(buf), "%02x%02x%02x", m_viewTags[0][0], m_viewTags[0][1], m_viewTags[0][2]);
-            LOGINFO(6, "DEBUG serialize viewTag[0]=" << (const char*)buf);
+            LOGINFO(6, "DEBUG serialize viewTag[0]=" << buf);
         }
         if (!m_encryptedAnchors.empty() && m_encryptedAnchors[0].size() >= 16) {
             std::string hex;