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-rw-r--r--src/lib/pbkdf/pbkdf2/pbkdf2.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/lib/pbkdf/pbkdf2/pbkdf2.h b/src/lib/pbkdf/pbkdf2/pbkdf2.h
index 1918f5dd2..4f77f338b 100644
--- a/src/lib/pbkdf/pbkdf2/pbkdf2.h
+++ b/src/lib/pbkdf/pbkdf2/pbkdf2.h
@@ -48,7 +48,7 @@ class BOTAN_DLL PKCS5_PBKDF2 final : public PBKDF
* Create a PKCS #5 instance using the specified message auth code
* @param mac_fn the MAC object to use as PRF
*/
- PKCS5_PBKDF2(MessageAuthenticationCode* mac_fn) : m_mac(mac_fn) {}
+ explicit PKCS5_PBKDF2(MessageAuthenticationCode* mac_fn) : m_mac(mac_fn) {}
static PKCS5_PBKDF2* make(const Spec& spec);
private: