diff --git a/lix/libexpr/eval-inline.hh b/lix/libexpr/eval-inline.hh
index 9a5211e70..2281669db 100644
--- a/lix/libexpr/eval-inline.hh
+++ b/lix/libexpr/eval-inline.hh
@@ -73,7 +73,6 @@ void EvalState::forceValue(Value & v, const PosIdx pos)
         Expr & expr = *v.thunk.expr;
         try {
             v.mkBlackhole();
-            //checkInterrupt();
             expr.eval(*this, *env, v);
         } catch (...) {
             v.mkThunk(env, expr);
diff --git a/lix/libstore/s3-binary-cache-store.cc b/lix/libstore/s3-binary-cache-store.cc
index e192e719c..7a40f2238 100644
--- a/lix/libstore/s3-binary-cache-store.cc
+++ b/lix/libstore/s3-binary-cache-store.cc
@@ -409,12 +409,9 @@ struct S3BinaryCacheStoreImpl : public S3BinaryCacheStore
                 transferConfig.bufferSize = config().bufferSize;
 
                 transferConfig.uploadProgressCallback =
-                    [](const TransferManager *transferManager,
-                        const std::shared_ptr<const TransferHandle>
-                        &transferHandle)
-                    {
-                        //FIXME: find a way to properly abort the multipart upload.
-                        //checkInterrupt();
+                    [](const TransferManager * transferManager,
+                       const std::shared_ptr<const TransferHandle> & transferHandle) {
+                        // FIXME: find a way to properly abort the multipart upload.
                         debug("upload progress ('%s'): '%d' of '%d' bytes",
                             transferHandle->GetKey(),
                             transferHandle->GetBytesTransferred(),