diff --git a/simulator/src/languages/grammars/base.ohm b/simulator/src/languages/grammars/base.ohm
index 513d5e41f..b55f4e7ba 100644
--- a/simulator/src/languages/grammars/base.ohm
+++ b/simulator/src/languages/grammars/base.ohm
@@ -69,7 +69,7 @@ Base {
   commentEnd = "*/"
   comment = commentStart (~commentEnd any)* commentEnd
   lineCommentStart = "//"
-  lineComment = lineCommentStart (~"\n" any)* "\n"
+  lineComment = lineCommentStart (~"\n" any)*
 
   List<elem, sep> = NonemptyListOf<elem, sep> sep?
   EmptyList<elem, sep> = EmptyList<elem, sep> sep?
diff --git a/simulator/src/languages/grammars/base.ohm.js b/simulator/src/languages/grammars/base.ohm.js
index 4df9c077c..8bf21ada9 100644
--- a/simulator/src/languages/grammars/base.ohm.js
+++ b/simulator/src/languages/grammars/base.ohm.js
@@ -70,7 +70,7 @@ Base {
   commentEnd = "*/"
   comment = commentStart (~commentEnd any)* commentEnd
   lineCommentStart = "//"
-  lineComment = lineCommentStart (~"\\n" any)* "\\n"
+  lineComment = lineCommentStart (~"\\n" any)*
 
   List<elem, sep> = NonemptyListOf<elem, sep> sep?
   EmptyList<elem, sep> = EmptyList<elem, sep> sep?