diff --git a/ParserKrokiTag.php b/ParserKrokiTag.php
index e34e2b8..557a8e9 100644
--- a/ParserKrokiTag.php
+++ b/ParserKrokiTag.php
@@ -215,7 +215,8 @@ class ParserKrokiTag {
 				'diagram_type' => $lang,
 				'output_format' => $output_format,
 				'diagram_options' => [
-					'no-doctype' => 'TRUE'
+					'no-doctype' => 'TRUE',
+					'no-transparency' => 'TRUE'
 				] ] ),
 		];
 
@@ -278,7 +279,8 @@ class ParserKrokiTag {
 				'diagram_type' => $lang,
 				'output_format' => $output_format,
 				'diagram_options' => [
-					'no-doctype' => 'TRUE'
+					'no-doctype' => 'TRUE',
+					'no-transparency' => 'TRUE'
 				] ], JSON_FORCE_OBJECT ),
 		];