diff --git a/src/PgSqlHandle.php b/src/PgSqlHandle.php
index b571bd2..ba5278d 100644
--- a/src/PgSqlHandle.php
+++ b/src/PgSqlHandle.php
@@ -268,7 +268,7 @@ final class PgSqlHandle implements Handle
                 foreach (self::DIAGNOSTIC_CODES as $fieldCode => $description) {
                     $diagnostics[$description] = \pg_result_error_field($result, $fieldCode);
                 }
-                throw new QueryExecutionError(\pg_result_error($result), $diagnostics, null, $sql);
+                throw new QueryExecutionError(\pg_result_error($result), $diagnostics, $sql);
 
             case \PGSQL_BAD_RESPONSE:
                 throw new FailureException(\pg_result_error($result));
@@ -419,7 +419,7 @@ final class PgSqlHandle implements Handle
                             foreach (self::DIAGNOSTIC_CODES as $fieldCode => $description) {
                                 $diagnostics[$description] = \pg_result_error_field($result, $fieldCode);
                             }
-                            throw new QueryExecutionError(\pg_result_error($result), $diagnostics, null, $sql);
+                            throw new QueryExecutionError(\pg_result_error($result), $diagnostics, $sql);
 
                         case \PGSQL_BAD_RESPONSE:
                             throw new FailureException(\pg_result_error($result));
diff --git a/src/PqHandle.php b/src/PqHandle.php
index 370c81c..cbebcaf 100644
--- a/src/PqHandle.php
+++ b/src/PqHandle.php
@@ -240,7 +240,7 @@ final class PqHandle implements Handle
 
             case pq\Result::NONFATAL_ERROR:
             case pq\Result::FATAL_ERROR:
-                throw new QueryExecutionError($result->errorMessage, $result->diag, null, $sql ?? '');
+                throw new QueryExecutionError($result->errorMessage, $result->diag, $sql ?? '');
 
             case pq\Result::BAD_RESPONSE:
                 throw new FailureException($result->errorMessage);
diff --git a/src/QueryExecutionError.php b/src/QueryExecutionError.php
index 9627844..1f8633b 100644
--- a/src/QueryExecutionError.php
+++ b/src/QueryExecutionError.php
@@ -9,7 +9,7 @@ class QueryExecutionError extends QueryError
     /** @var mixed[] */
     private $diagnostics;
 
-    public function __construct(string $message, array $diagnostics, \Throwable $previous = null, string $query = '')
+    public function __construct(string $message, array $diagnostics, string $query = '', \Throwable $previous = null)
     {
         parent::__construct($message, $query, $previous);
         $this->diagnostics = $diagnostics;