diff --git a/src/ext/spout/SpoutBuilder.php b/src/ext/spout/SpoutBuilder.php
index 863fa5f..a5290dd 100644
--- a/src/ext/spout/SpoutBuilder.php
+++ b/src/ext/spout/SpoutBuilder.php
@@ -188,7 +188,7 @@ class SpoutBuilder extends AbstractBuilder {
 
     $this->ssType = $ssType;
     $this->ssWriter = $ssWriter;
-    $this->writerParams = $spoutParams;
+    $this->spoutParams = $spoutParams;
     $this->typeNumeric = boolval($params["type_numeric"] ?? static::TYPE_NUMERIC);
     $this->typeDate = boolval($params["type_date"] ?? static::TYPE_DATE);
 
@@ -209,7 +209,7 @@ class SpoutBuilder extends AbstractBuilder {
 
   protected WriterMultiSheetsAbstract $ssWriter;
 
-  protected ?array $writerParams;
+  protected ?array $spoutParams;
 
   protected bool $typeNumeric;