diff --git a/build/psalm.xml b/build/psalm.xml
index b521dbfe..0a3f8db6 100644
--- a/build/psalm.xml
+++ b/build/psalm.xml
@@ -7,7 +7,6 @@
     xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
     findUnusedPsalmSuppress="true"
     sealAllMethods="true"
-    errorBaseline="psalm_baseline.xml"
 >
     <projectFiles>
         <directory name="../phpseclib"/>
@@ -27,5 +26,20 @@
                 <directory name="../phpseclib/Net"/>
             </errorLevel>
         </UndefinedConstant>
+        <ParamNameMismatch>
+            <errorLevel type="suppress">
+                <directory name="../phpseclib/Math"/>
+            </errorLevel>
+        </ParamNameMismatch>
+        <UndefinedMethod>
+            <errorLevel type="suppress">
+                <directory name="../phpseclib/Math"/>
+            </errorLevel>
+        </UndefinedMethod>
+        <UndefinedConstant>
+            <errorLevel type="suppress">
+                <directory name="../phpseclib/Math"/>
+            </errorLevel>
+        </UndefinedConstant>
     </issueHandlers>
 </psalm>
\ No newline at end of file
diff --git a/phpseclib/Math/BinaryField.php b/phpseclib/Math/BinaryField.php
index 58f5c148..e0bc4915 100644
--- a/phpseclib/Math/BinaryField.php
+++ b/phpseclib/Math/BinaryField.php
@@ -162,7 +162,7 @@ class BinaryField extends FiniteField
      * Converts a base-2 string to a base-256 string
      *
      * @param string $x
-     * @param integer $size
+     * @param int|null $size
      * @return string
      */
     public static function base2ToBase256($x, $size = null)
@@ -196,3 +196,4 @@ class BinaryField extends FiniteField
         return Strings::bin2bits($x);
     }
 }
+