diff --git a/lib/mergely.js b/lib/mergely.js
index 31e2fdb..1fe2c6d 100644
--- a/lib/mergely.js
+++ b/lib/mergely.js
@@ -12,7 +12,7 @@ Mgly.Timer = function(){
 	self.start();
 }
 
-Mgly.ChangeExpression = new RegExp(/(\d+(?:,\d+)?)([acd])(\d+(?:,\d+)?)/);
+Mgly.ChangeExpression = new RegExp(/(^(?![><-])*\d+(?:,\d+)?)([acd])(\d+(?:,\d+)?)/);
 
 Mgly.DiffParser = function(diff) {
 	var changes = [];