diff --git a/index.js b/index.js
index 0800822..1ac60c6 100644
--- a/index.js
+++ b/index.js
@@ -11,9 +11,9 @@
 
 !function(exports) {
 	var undef
-	, selectorRe = /([.#:[])([-\w]+)(?:\((.+?)\)|([~^$*|]?)=(("|')(?:\\\6|.)*?\6|[-\w]+))?]?/g
-	, selectorLastRe = /([\s>+~]*)(?:("|')(?:\\\2|.)*?\2|\(.+?\)|~=|[^\s>+~])+$/
-	, selectorSplitRe = /\s*,\s*(?=(?:[^'"()]|"(?:\\"|.)*?"|'(?:\\'|.)*?'|\(.+?\))+$)/
+	, selectorRe = /([.#:[])([-\w]+)(?:\((.+?)\)|([~^$*|]?)=(("|')(?:\\.|[^\\])*?\6|[-\w]+))?]?/g
+	, selectorLastRe = /([\s>+~]*)(?:("|')(?:\\.|[^\\])*?\2|\(.+?\)|~=|[^\s>+~])+$/
+	, selectorSplitRe = /\s*,\s*(?=(?:[^'"()]|"(?:\\.|[^\\])*?"|'(?:\\.|[^\\])*?'|\(.+?\))+$)/
 	, selectorCache = {
 		"": function() {}
 	}