diff --git a/core/modules/parsers/wikiparser/rules/syslink.js b/core/modules/parsers/wikiparser/rules/syslink.js
index 441fe2aa5..5189ee82d 100644
--- a/core/modules/parsers/wikiparser/rules/syslink.js
+++ b/core/modules/parsers/wikiparser/rules/syslink.js
@@ -18,7 +18,12 @@ exports.types = {inline: true};
 exports.init = function(parser) {
 	this.parser = parser;
 	// Regexp to match
-	this.matchRegExp = /~?\$:\/[a-zA-Z0-9/.\-_]+/mg;
+	this.matchRegExp = new RegExp(
+		"~?\\$:\\/(?:" +
+			$tw.config.textPrimitives.anyLetter +
+			"|[\/._-])+",
+		"mg"
+	);
 };
 
 exports.parse = function() {