diff --git a/lib/Doctrine/DBAL/Platforms/AbstractPlatform.php b/lib/Doctrine/DBAL/Platforms/AbstractPlatform.php
index 0ff7b4af934..52543b17881 100644
--- a/lib/Doctrine/DBAL/Platforms/AbstractPlatform.php
+++ b/lib/Doctrine/DBAL/Platforms/AbstractPlatform.php
@@ -37,9 +37,7 @@
 use function assert;
 use function count;
 use function explode;
-use function func_get_arg;
 use function func_get_args;
-use function func_num_args;
 use function implode;
 use function in_array;
 use function is_array;
@@ -3472,13 +3470,9 @@ public function getTruncateTableSQL($tableName, $cascade = false)
 
     /**
      * This is for test reasons, many vendors have special requirements for dummy statements.
-     *
-     * @return string
      */
-    public function getDummySelectSQL()
+    public function getDummySelectSQL(string $expression = '1') : string
     {
-        $expression = func_num_args() > 0 ? func_get_arg(0) : '1';
-
         return sprintf('SELECT %s', $expression);
     }
 
diff --git a/lib/Doctrine/DBAL/Platforms/DB2Platform.php b/lib/Doctrine/DBAL/Platforms/DB2Platform.php
index 886a64112e5..d5cade6e8af 100644
--- a/lib/Doctrine/DBAL/Platforms/DB2Platform.php
+++ b/lib/Doctrine/DBAL/Platforms/DB2Platform.php
@@ -12,8 +12,6 @@
 use function count;
 use function current;
 use function explode;
-use function func_get_arg;
-use function func_num_args;
 use function implode;
 use function sprintf;
 use function strpos;
@@ -872,10 +870,8 @@ public function getForUpdateSQL()
     /**
      * {@inheritDoc}
      */
-    public function getDummySelectSQL()
+    public function getDummySelectSQL(string $expression = '1') : string
     {
-        $expression = func_num_args() > 0 ? func_get_arg(0) : '1';
-
         return sprintf('SELECT %s FROM sysibm.sysdummy1', $expression);
     }
 
diff --git a/lib/Doctrine/DBAL/Platforms/OraclePlatform.php b/lib/Doctrine/DBAL/Platforms/OraclePlatform.php
index 1614ed203ba..f5ef8d59df7 100644
--- a/lib/Doctrine/DBAL/Platforms/OraclePlatform.php
+++ b/lib/Doctrine/DBAL/Platforms/OraclePlatform.php
@@ -15,8 +15,6 @@
 use function array_merge;
 use function count;
 use function explode;
-use function func_get_arg;
-use function func_num_args;
 use function implode;
 use function preg_match;
 use function sprintf;
@@ -1106,10 +1104,8 @@ public function getTruncateTableSQL($tableName, $cascade = false)
     /**
      * {@inheritDoc}
      */
-    public function getDummySelectSQL()
+    public function getDummySelectSQL(string $expression = '1') : string
     {
-        $expression = func_num_args() > 0 ? func_get_arg(0) : '1';
-
         return sprintf('SELECT %s FROM DUAL', $expression);
     }