5 files changed, 5 insertions, 5 deletions
diff --git a/src/lib/hash/blake2/blake2b.h b/src/lib/hash/blake2/blake2b.h
index efe0d34f4..290db10f0 100644
--- a/src/lib/hash/blake2/blake2b.h
+++ b/src/lib/hash/blake2/blake2b.h
@@ -29,7 +29,7 @@ class BOTAN_DLL Blake2b final : public HashFunction
       /**
       * @param output_bits the output size of Blake2b in bits
       */
-      Blake2b(size_t output_bits = 512);
+      explicit Blake2b(size_t output_bits = 512);
 
       size_t hash_block_size() const override { return BLAKE2B_BLOCKBYTES; }
       size_t output_length() const override { return m_output_bits / 8; }
diff --git a/src/lib/hash/hash.cpp b/src/lib/hash/hash.cpp
index b6a7ca50d..9a15c7998 100644
--- a/src/lib/hash/hash.cpp
+++ b/src/lib/hash/hash.cpp
@@ -98,7 +98,7 @@ namespace Botan {
 std::unique_ptr<HashFunction> HashFunction::create(const std::string& algo_spec,
                                                    const std::string& provider)
    {
-   return std::unique_ptr<HashFunction>(make_a<HashFunction>(algo_spec, provider));
+   return std::unique_ptr<HashFunction>(make_a<HashFunction>(Botan::HashFunction::Spec(algo_spec), provider));
    }
 
 std::vector<std::string> HashFunction::providers(const std::string& algo_spec)
diff --git a/src/lib/hash/keccak/keccak.h b/src/lib/hash/keccak/keccak.h
index 7929dd502..a73595d6a 100644
--- a/src/lib/hash/keccak/keccak.h
+++ b/src/lib/hash/keccak/keccak.h
@@ -25,7 +25,7 @@ class BOTAN_DLL Keccak_1600 final : public HashFunction
       * @param output_bits the size of the hash output; must be one of
       *                    224, 256, 384, or 512
       */
-      Keccak_1600(size_t output_bits = 512);
+      explicit Keccak_1600(size_t output_bits = 512);
 
       size_t hash_block_size() const override { return m_bitrate / 8; }
       size_t output_length() const override { return m_output_bits / 8; }
diff --git a/src/lib/hash/par_hash/par_hash.h b/src/lib/hash/par_hash/par_hash.h
index b0e2ff828..3a93f4e8e 100644
--- a/src/lib/hash/par_hash/par_hash.h
+++ b/src/lib/hash/par_hash/par_hash.h
@@ -28,7 +28,7 @@ class BOTAN_DLL Parallel final : public HashFunction
       /**
       * @param hashes a set of hashes to compute in parallel
       */
-      Parallel(const std::vector<HashFunction*>& hashes);
+      explicit Parallel(const std::vector<HashFunction*>& hashes);
 
       Parallel(const Parallel&) = delete;
       Parallel& operator=(const Parallel&) = delete;
diff --git a/src/lib/hash/sha1/sha160.h b/src/lib/hash/sha1/sha160.h
index 2f5d9b16e..b4a161c14 100644
--- a/src/lib/hash/sha1/sha160.h
+++ b/src/lib/hash/sha1/sha160.h
@@ -35,7 +35,7 @@ class BOTAN_DLL SHA_160 : public MDx_HashFunction
       * constraints
       * @param W_size how big to make W
       */
-      SHA_160(size_t W_size) :
+      explicit SHA_160(size_t W_size) :
          MDx_HashFunction(64, true, true), m_digest(5), m_W(W_size)
          {
          clear();