diff --git a/src/Symfony/Component/Yaml/Parser.php b/src/Symfony/Component/Yaml/Parser.php
index 2f8afc298ae5f..fc431f4f789d6 100644
--- a/src/Symfony/Component/Yaml/Parser.php
+++ b/src/Symfony/Component/Yaml/Parser.php
@@ -1207,7 +1207,10 @@ private function lexInlineStructure(int &$cursor, string $closingTag, bool $cons
                         ++$cursor;
 
                         if ($consumeUntilEol && isset($this->currentLine[$cursor]) && (strspn($this->currentLine, ' ', $cursor) + $cursor) < strlen($this->currentLine)) {
-                            throw new ParseException(sprintf('Unexpected token "%s".', trim(substr($this->currentLine, $cursor))));
+                            $remain = trim(substr($this->currentLine, $cursor));
+                            if (!str_starts_with($remain, '#')) {
+                                throw new ParseException(sprintf('Unexpected token "%s".', $remain));
+                            }
                         }
 
                         return $value;