diff --git a/lib/util/template-parameters.js b/lib/util/template-parameters.js
index a2c7d18..21cdb22 100644
--- a/lib/util/template-parameters.js
+++ b/lib/util/template-parameters.js
@@ -51,7 +51,7 @@ export function addParameterBesideExistingParameter (pageContent, newParamName,
 }
 
 /** RegExp that matches the last parameter in an infobox. */
-const existingLastParameterRegExp = /^( *)\|( *)([a-z0-9-_]+)( *)=( *)(.*)(\n *}})$/m;
+const existingLastParameterRegExp = /^( *)\|( *)([a-z0-9-_]+)( *)=( *)(.*)(\n *}})/m;
 
 /** Inserts a new parameter at the end of the infobox. */
 export function addParameterAtBottom (pageContent, newParamName, value) {