diff --git a/ph-css/src/main/jjtree/ParserCSS30.jjt b/ph-css/src/main/jjtree/ParserCSS30.jjt
index 99ea6fdf..7d831950 100644
--- a/ph-css/src/main/jjtree/ParserCSS30.jjt
+++ b/ph-css/src/main/jjtree/ParserCSS30.jjt
@@ -132,12 +132,7 @@ TOKEN :
 // nonascii  [^\0-\177] - everything except 0x00-0x7f
 | < #NONASCII: ["\u0080"-"\uffff"] >
 
-| < #ESCAPE_UNICODE: "\\" <HNUM> ( "\r\n"
-                                 | [" ","\t","\r","\n","\f"]
-                                 )? >
-| < #ESCAPE_OTHER: "\\" ~["\n","\r","\f","0"-"9","a"-"f"] >
-| < #ESCAPE: <ESCAPE_UNICODE>
-           | <ESCAPE_OTHER> >
+| < #ESCAPE: "\\" ~["\n","\r","\f","0"-"9","a"-"f"] >
 // nmstart      [_a-z]|{nonascii}|{escape}
 | < #NMSTART: ["_","a"-"z"]
             | <NONASCII>
diff --git a/ph-css/src/main/jjtree/ParserCSSCharsetDetector.jjt b/ph-css/src/main/jjtree/ParserCSSCharsetDetector.jjt
index 533c19f7..48fa5e78 100644
--- a/ph-css/src/main/jjtree/ParserCSSCharsetDetector.jjt
+++ b/ph-css/src/main/jjtree/ParserCSSCharsetDetector.jjt
@@ -80,19 +80,7 @@ SKIP :
 <DEFAULT>
 TOKEN :
 {
-  < #H: ["0"-"9","a"-"f"] >
-| < #HNUM: <H>
-         | <H><H>
-         | <H><H><H>
-         | <H><H><H><H>
-         | <H><H><H><H><H>
-         | <H><H><H><H><H><H> >
-| < #ESCAPE_UNICODE: "\\" <HNUM> ( "\r\n"
-                                 | [" ","\t","\r","\n","\f"]
-                                 )? >
-| < #ESCAPE_OTHER: "\\" ~["\r","\n","\f","0"-"9","a"-"f"] >
-| < #ESCAPE: <ESCAPE_UNICODE>
-           | <ESCAPE_OTHER> >
+  < #ESCAPE: "\\" ~["\r","\n","\f","0"-"9","a"-"f"] >
 | < SEMICOLON: ";" >
 | < #STRING_EOL: "\n"
                | "\r\n"