diff --git a/src/ZoneCodeGenerator/Parsing/Matching/Matchers/MatcherGroupOptional.cs b/src/ZoneCodeGenerator/Parsing/Matching/Matchers/MatcherGroupOptional.cs
index 6be2ac31..7792cd4d 100644
--- a/src/ZoneCodeGenerator/Parsing/Matching/Matchers/MatcherGroupOptional.cs
+++ b/src/ZoneCodeGenerator/Parsing/Matching/Matchers/MatcherGroupOptional.cs
@@ -12,6 +12,7 @@
         protected override TokenMatchingResult PerformTest(MatchingContext context, int tokenOffset)
         {
             var result = matcher.Test(context, tokenOffset);
+            result.PrependTag(Tag);
 
             return !result.Successful ? new TokenMatchingResult(true, 0) : result;
         }