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-rw-r--r--src/lib/kdf/kdf1_iso18033/kdf1_iso18033.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/lib/kdf/kdf1_iso18033/kdf1_iso18033.h b/src/lib/kdf/kdf1_iso18033/kdf1_iso18033.h
index fcd465436..7a95a093b 100644
--- a/src/lib/kdf/kdf1_iso18033/kdf1_iso18033.h
+++ b/src/lib/kdf/kdf1_iso18033/kdf1_iso18033.h
@@ -31,7 +31,7 @@ class BOTAN_PUBLIC_API(2,0) KDF1_18033 final : public KDF
/**
* @param h hash function to use
*/
- KDF1_18033(HashFunction* h) : m_hash(h) {}
+ explicit KDF1_18033(HashFunction* h) : m_hash(h) {}
private:
std::unique_ptr<HashFunction> m_hash;
};