diff --git a/core/modules/parsers/parseutils.js b/core/modules/parsers/parseutils.js
index d64759065..c63e8f2c9 100644
--- a/core/modules/parsers/parseutils.js
+++ b/core/modules/parsers/parseutils.js
@@ -122,7 +122,7 @@ exports.parseMacroParameter = function(source,pos) {
 		start: pos
 	};
 	// Define our regexp
-	var reMacroParameter = /(?:([A-Za-z0-9\-_]+)\s*:)?(?:\s*(?:"([^"]*)"|'([^']*)'|\[\[([^\]]*)\]\]|([^\s>"'=]+)))/g;
+	var reMacroParameter = /(?:([A-Za-z0-9\-_]+)\s*:)?(?:\s*(?:"""([\s\S]*?)"""|"([^"]*)"|'([^']*)'|\[\[([^\]]*)\]\]|([^\s>"'=]+)))/g;
 	// Skip whitespace
 	pos = $tw.utils.skipWhiteSpace(source,pos);
 	// Look for the parameter