diff --git a/core/modules/parsers/wikiparser/rules/transcludeblock.js b/core/modules/parsers/wikiparser/rules/transcludeblock.js
index 870205256..c033c2440 100644
--- a/core/modules/parsers/wikiparser/rules/transcludeblock.js
+++ b/core/modules/parsers/wikiparser/rules/transcludeblock.js
@@ -23,7 +23,7 @@ exports.types = {block: true};
 exports.init = function(parser) {
 	this.parser = parser;
 	// Regexp to match
-	this.matchRegExp = /\{\{([^\{\}\|]*)(?:\|\|([^\|\{\}]+))?\}\}(?:\r?\n|$)/mg;
+	this.matchRegExp = /\{\{([^\{\}\|]*)(?:\|\|([^\|\{\}]+))?(?:\|([^\{\}]+))?\}\}(?:\r?\n|$)/mg;
 };
 
 exports.parse = function() {
diff --git a/core/modules/parsers/wikiparser/rules/transcludeinline.js b/core/modules/parsers/wikiparser/rules/transcludeinline.js
index 04c2300b5..3ce9dc78e 100644
--- a/core/modules/parsers/wikiparser/rules/transcludeinline.js
+++ b/core/modules/parsers/wikiparser/rules/transcludeinline.js
@@ -23,7 +23,7 @@ exports.types = {inline: true};
 exports.init = function(parser) {
 	this.parser = parser;
 	// Regexp to match
-	this.matchRegExp = /\{\{([^\{\}\|]*)(?:\|\|([^\|\{\}]+))?\}\}/mg;
+	this.matchRegExp = /\{\{([^\{\}\|]*)(?:\|\|([^\|\{\}]+))?(?:\|([^\{\}]+))?\}\}/mg;
 };
 
 exports.parse = function() {