diff --git a/src/format/Kdbx4Reader.cpp b/src/format/Kdbx4Reader.cpp
index b0545888f..38063acf1 100644
--- a/src/format/Kdbx4Reader.cpp
+++ b/src/format/Kdbx4Reader.cpp
@@ -203,7 +203,7 @@ bool Kdbx4Reader::readHeaderField(StoreDataStream& device)
         QVariantMap kdfParams = readVariantMap(&bufIoDevice);
         QSharedPointer<Kdf> kdf = KeePass2::kdfFromParameters(kdfParams);
         if (!kdf) {
-            raiseError(tr("Invalid KDF parameters"));
+            raiseError(tr("Unsupported key derivation function (KDF) or invalid parameters"));
             return false;
         }
         m_db->setKdf(kdf);
diff --git a/src/format/KeePass2.cpp b/src/format/KeePass2.cpp
index 9f0832fb0..d58e8bbfd 100644
--- a/src/format/KeePass2.cpp
+++ b/src/format/KeePass2.cpp
@@ -70,7 +70,7 @@ QByteArray KeePass2::hmacKey(QByteArray masterSeed, QByteArray transformedMaster
  * @param p variant map containing parameters
  * @return initialized KDF
  */
-QSharedPointer<Kdf> KeePass2::kdfFromParameters(const QVariantMap &p)
+QSharedPointer<Kdf> KeePass2::kdfFromParameters(const QVariantMap& p)
 {
     QByteArray uuidBytes = p.value(KDFPARAM_UUID).toByteArray();
     if (uuidBytes.size() != Uuid::Length) {
@@ -111,7 +111,6 @@ QSharedPointer<Kdf> KeePass2::uuidToKdf(const Uuid& uuid)
         return QSharedPointer<Argon2Kdf>::create();
     }
 
-    Q_ASSERT_X(false, "uuidToKdf", "Invalid UUID");
     return {};
 }
 
diff --git a/src/format/KeePass2.h b/src/format/KeePass2.h
index cd53d7132..c376ecdf2 100644
--- a/src/format/KeePass2.h
+++ b/src/format/KeePass2.h
@@ -122,7 +122,7 @@ namespace KeePass2
     };
 
     QByteArray hmacKey(QByteArray masterSeed, QByteArray transformedMasterKey);
-    QSharedPointer<Kdf> kdfFromParameters(const QVariantMap &p);
+    QSharedPointer<Kdf> kdfFromParameters(const QVariantMap& p);
     QVariantMap kdfToParameters(QSharedPointer<Kdf> kdf);
     QSharedPointer<Kdf> uuidToKdf(const Uuid& uuid);
     Uuid kdfToUuid(QSharedPointer<Kdf> kdf);