diff --git a/htdocs/core/lib/signature.lib.php b/htdocs/core/lib/signature.lib.php
index 7267ecf8514..ba78d5c008c 100644
--- a/htdocs/core/lib/signature.lib.php
+++ b/htdocs/core/lib/signature.lib.php
@@ -207,11 +207,6 @@ function getOnlineSignatureUrl($mode, $type, $ref = '', $localorexternal = 1, $o
 	// For multicompany
 	if (!empty($out) && isModEnabled('multicompany')) {
 		$out .= "&entity=".(empty($obj->entity) ? '' : (int) $obj->entity); // Check the entity because we may have the same reference in several entities
-	} elseif ($mode == 0) {
-		// Bcrypt output (dol_hash type '0') can legitimately end with '.' or '/', which Gmail and several mobile mail
-		// clients strip from autolinked URLs and break the signature link. Append a stable trailing parameter that
-		// the receiver ignores so the URL never ends with the hash. Only for the real URL (mode 0), not the preview.
-		$out .= "&_=1";
 	}
 
 	return $out;