diff --git a/src/libstore/normalise.cc b/src/libstore/normalise.cc
index f156eafb76..a89426cdf2 100644
--- a/src/libstore/normalise.cc
+++ b/src/libstore/normalise.cc
@@ -1417,7 +1417,7 @@ void SubstitutionGoal::finished()
 
 void SubstitutionGoal::trace(const format & f)
 {
-    debug(format("substitution of `%1%': %2%") % nePath % f);
+    debug(format("substitution of `%1%': %2%") % storePath % f);
 }