diff --git a/src/base/blob.hpp b/src/base/blob.hpp
index 53622685..78fb2caf 100644
--- a/src/base/blob.hpp
+++ b/src/base/blob.hpp
@@ -39,8 +39,9 @@ namespace sgns::base {
      * @brief constructor enabling initializer list
      * @param l initializer list
      */
-    explicit Blob(const std::array<byte_t, size_> &l) {
-      std::copy(l.begin(), l.end(), this->begin());
+    explicit constexpr Blob( const std::array<byte_t, size_> &l )
+    {
+        std::copy( l.begin(), l.end(), this->begin() );
     }
 
     /**
diff --git a/src/primitives/common.hpp b/src/primitives/common.hpp
index 8a7a5683..9ee64bfd 100644
--- a/src/primitives/common.hpp
+++ b/src/primitives/common.hpp
@@ -1,5 +1,3 @@
-
-
 #ifndef SUPERGENIUS_SRC_PRIMITIVES_COMMON_HPP
 #define SUPERGENIUS_SRC_PRIMITIVES_COMMON_HPP
 
@@ -19,10 +17,11 @@ namespace sgns::primitives {
     // (BlockInfo, Prevote, Precommit, PrimaryPropose)
     template <typename Tag>
     struct BlockInfoT : public boost::equality_comparable<BlockInfoT<Tag>> {
-      BlockInfoT() = default;
+      constexpr BlockInfoT() = default;
 
-      BlockInfoT(const BlockNumber &n, const BlockHash &h)
-          : block_number(n), block_hash(h) {}
+      constexpr BlockInfoT( BlockNumber n, BlockHash h ) : block_number( n ), block_hash( h )
+      {
+      }
 
       BlockNumber block_number{};
       BlockHash   block_hash;
diff --git a/src/verification/authority/impl/schedule_node.hpp b/src/verification/authority/impl/schedule_node.hpp
index f47d004e..42a794c1 100644
--- a/src/verification/authority/impl/schedule_node.hpp
+++ b/src/verification/authority/impl/schedule_node.hpp
@@ -27,7 +27,7 @@ namespace sgns::authority {
     std::shared_ptr<ScheduleNode> makeDescendant(
         const primitives::BlockInfo &block, bool finalized = false);
 
-    const primitives::BlockInfo                block;
+    const primitives::BlockInfo                block{};
     std::weak_ptr<ScheduleNode> parent;
     std::vector<std::shared_ptr<ScheduleNode>> descendants;