diff --git a/src/libcmd/repl.cc b/src/libcmd/repl.cc
index 940a287c7..d7201b321 100644
--- a/src/libcmd/repl.cc
+++ b/src/libcmd/repl.cc
@@ -49,7 +49,6 @@ struct NixRepl
 {
     std::string curDir;
     EvalState &state;
-    // ref<EvalState> state;
     Bindings * autoArgs;
 
     size_t debugTraceIndex;