diff --git a/src/core/Database/PDOStatementProxy.php b/src/core/Database/PDOStatementProxy.php
index 532cf65e..6141fe38 100644
--- a/src/core/Database/PDOStatementProxy.php
+++ b/src/core/Database/PDOStatementProxy.php
@@ -129,7 +129,7 @@ public function setFetchMode(int $mode, ...$args): bool
         return $this->__object->setFetchMode(...$this->setFetchModeContext);
     }
 
-    public function bindParam($parameter, &$variable, $data_type = PDO::PARAM_STR, $length = null, $driver_options = null): bool
+    public function bindParam($parameter, &$variable, $data_type = PDO::PARAM_STR, $length = 0, $driver_options = null): bool
     {
         $this->bindParamContext[$parameter] = [$variable, $data_type, $length, $driver_options];
         return $this->__object->bindParam($parameter, $variable, $data_type, $length, $driver_options);
diff --git a/tests/unit/Database/PDOStatementProxyTest.php b/tests/unit/Database/PDOStatementProxyTest.php
index 4a421ccc..2e79d059 100644
--- a/tests/unit/Database/PDOStatementProxyTest.php
+++ b/tests/unit/Database/PDOStatementProxyTest.php
@@ -90,4 +90,18 @@ public function testSetFetchMode(array $expected, array $args, string $message)
             self::assertEquals($expected, $stmt->fetchAll(), $message);
         });
     }
+
+    /**
+     * @covers \Swoole\Database\PDOStatementProxy::bindParam()
+     */
+    public function testBindParam()
+    {
+        Coroutine\run(function () {
+            $stmt = $this->getPdoPool()->get()->prepare('SHOW TABLES like ?');
+            $table = 'NON_EXISTING_TABLE_NAME';
+            $stmt->bindParam(1, $table, PDO::PARAM_STR);
+            $stmt->execute();
+            self::assertIsArray($stmt->fetchAll());
+        });
+    }
 }