diff --git a/Makefile b/Makefile
index 05c4bdc8a..f4ad2c468 100644
--- a/Makefile
+++ b/Makefile
@@ -17,8 +17,7 @@ makefiles = \
   misc/upstart/local.mk \
   doc/manual/local.mk \
   tests/local.mk \
-  tests/plugins/local.mk \
-  src/error-demo/local.mk
+  tests/plugins/local.mk 
 
 -include Makefile.config
 
diff --git a/src/libexpr/parser.y b/src/libexpr/parser.y
index 1a4f3d56b..f8b5fb0d5 100644
--- a/src/libexpr/parser.y
+++ b/src/libexpr/parser.y
@@ -663,7 +663,6 @@ Expr * EvalState::parseExprFromString(std::string_view s, const Path & basePath)
 Expr * EvalState::parseStdin()
 {
     //Activity act(*logger, lvlTalkative, format("parsing standard input"));
-    // return parseExprFromString(foStdin, drainFD(0), absPath("."));
     return parse(drainFD(0).data(), foStdin, "", absPath("."), staticBaseEnv);
 }