diff --git a/Hasher/MessageDigestPasswordHasher.php b/Hasher/MessageDigestPasswordHasher.php
index 357a26b..d89c7f9 100644
--- a/Hasher/MessageDigestPasswordHasher.php
+++ b/Hasher/MessageDigestPasswordHasher.php
@@ -41,7 +41,7 @@ public function __construct(string $algorithm = 'sha512', bool $encodeHashAsBase
 
         try {
             $this->hashLength = \strlen($this->hash('', 'salt'));
-        } catch (\LogicException $e) {
+        } catch (\LogicException) {
             // ignore algorithm not supported
         }
 
diff --git a/Hasher/Pbkdf2PasswordHasher.php b/Hasher/Pbkdf2PasswordHasher.php
index 0553e3d..bf17cb4 100644
--- a/Hasher/Pbkdf2PasswordHasher.php
+++ b/Hasher/Pbkdf2PasswordHasher.php
@@ -52,7 +52,7 @@ public function __construct(string $algorithm = 'sha512', bool $encodeHashAsBase
 
         try {
             $this->encodedLength = \strlen($this->hash('', 'salt'));
-        } catch (\LogicException $e) {
+        } catch (\LogicException) {
             // ignore unsupported algorithm
         }