diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc
index 4367f9b22..14a7deed5 100644
--- a/src/libexpr/primops.cc
+++ b/src/libexpr/primops.cc
@@ -591,6 +591,7 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
 
     /* Build the derivation expression by processing the attributes. */
     Derivation drv;
+    drv.name = drvName;
 
     PathSet context;