diff --git a/resources/web/guide/21/21.js b/resources/web/guide/21/21.js
index 5a37c4c32..fbc32ced3 100644
--- a/resources/web/guide/21/21.js
+++ b/resources/web/guide/21/21.js
@@ -133,7 +133,7 @@ function HandleModelList( pVal )
 	let nSelect=AlreadySelect.length;
 	if(nSelect==0)
 	{
-		$("input[nozzel='0.4']").prop("checked", true);
+		$("input[nozzel='0.4'][vendor='BBL']").prop("checked", true);
 	}
 	
 	TranslatePage();
diff --git a/resources/web/guide/24/24.js b/resources/web/guide/24/24.js
index 43dffda13..c1b7d3391 100644
--- a/resources/web/guide/24/24.js
+++ b/resources/web/guide/24/24.js
@@ -133,7 +133,7 @@ function HandleModelList( pVal )
 	let nSelect=AlreadySelect.length;
 	if(nSelect==0)
 	{
-		$("input[nozzel='0.4']").prop("checked", true);
+		$("input[nozzel='0.4'][vendor='BBL']").prop("checked", true);
 	}
 	
 	TranslatePage();