diff --git a/CSharpTranslator/antlr3/src/CSharpParser/cs.g b/CSharpTranslator/antlr3/src/CSharpParser/cs.g
index 2109f8c..94d536e 100644
--- a/CSharpTranslator/antlr3/src/CSharpParser/cs.g
+++ b/CSharpTranslator/antlr3/src/CSharpParser/cs.g
@@ -1441,7 +1441,7 @@ EscapeSequence
              |   'x'   HEX_DIGIT   HEX_DIGIT  HEX_DIGIT
              |   'x'   HEX_DIGIT   HEX_DIGIT  HEX_DIGIT  HEX_DIGIT
              |   'u'   HEX_DIGIT   HEX_DIGIT  HEX_DIGIT  HEX_DIGIT
-             |   'U'   HEX_DIGIT   HEX_DIGIT  HEX_DIGIT  HEX_DIGIT  HEX_DIGIT  HEX_DIGIT  HEX_DIGIT
+             |   'U'   HEX_DIGIT   HEX_DIGIT  HEX_DIGIT  HEX_DIGIT  HEX_DIGIT  HEX_DIGIT  HEX_DIGIT  HEX_DIGIT
              ) ;     
 fragment
 Decimal_integer_literal: