diff --git a/lix/libstore/build/local-derivation-goal.cc b/lix/libstore/build/local-derivation-goal.cc
index 13bda5df9..2222d10c6 100644
--- a/lix/libstore/build/local-derivation-goal.cc
+++ b/lix/libstore/build/local-derivation-goal.cc
@@ -490,7 +490,9 @@ try {
         /* Schedule this scratch output path for automatic deletion
          * if we do not cancel it, e.g. when registering the outputs.
          */
-        scratchOutputsCleaner.emplace(outputName, worker.store.printStorePath(scratchPath));
+        scratchOutputsCleaner.emplace(
+            outputName, worker.store.toRealPath(worker.store.printStorePath(scratchPath))
+        );
 
         /* Substitute output placeholders with the scratch output paths.
            We'll use during the build. */