1 files changed, 1 insertions, 1 deletions
diff --git a/src/libexpr/eval.hh b/src/libexpr/eval.hh
index 694d4407b847..3816f36bd6a7 100644
--- a/src/libexpr/eval.hh
+++ b/src/libexpr/eval.hh
@@ -204,7 +204,7 @@ public:
     SymbolTable symbols;
 
     const Symbol sWith, sOutPath, sDrvPath, sType, sMeta, sName,
-        sSystem, sOverrides;
+        sSystem, sOverrides, sCurrentOutput;
 
 private:
     SrcToStore srcToStore;