diff --git a/src/Extension/Strikethrough/StrikethroughDelimiterProcessor.php b/src/Extension/Strikethrough/StrikethroughDelimiterProcessor.php
index af0fdb17c7..978e75a43f 100644
--- a/src/Extension/Strikethrough/StrikethroughDelimiterProcessor.php
+++ b/src/Extension/Strikethrough/StrikethroughDelimiterProcessor.php
@@ -44,7 +44,8 @@ public function getDelimiterUse(DelimiterInterface $opener, DelimiterInterface $
             return 0;
         }
 
-        return \min($opener->getLength(), $closer->getLength());
+        // $opener and $closer are the same length so we just return one of them
+        return $opener->getLength();
     }
 
     public function process(AbstractStringContainer $opener, AbstractStringContainer $closer, int $delimiterUse): void