diff --git a/src/libstore/filetransfer.cc b/src/libstore/filetransfer.cc
index c29132d9c..8a566f441 100644
--- a/src/libstore/filetransfer.cc
+++ b/src/libstore/filetransfer.cc
@@ -506,13 +506,12 @@ struct curlFileTransfer : public FileTransfer
         // loop with kj. until then curl will handle its timeouts internally.
         int64_t timeoutMs = INT64_MAX;
 
-        while (!quit) {
-            checkInterrupt();
-
+        while (true) {
             {
                 auto cancel = [&] { return std::move(state_.lock()->cancel); }();
                 for (auto & [item, promise] : cancel) {
                     curl_multi_remove_handle(curlm.get(), item->req.get());
+                    items.erase(item->req.get());
                     promise.set_value();
                 }
             }
@@ -536,6 +535,12 @@ struct curlFileTransfer : public FileTransfer
                 }
             }
 
+            // only exit when all transfers are done (which will happen through the
+            // progress callback issuing an abort in the case of user interruption)
+            if (items.empty() && quit) {
+                break;
+            }
+
             /* Wait for activity, including wakeup events. */
             mc = curl_multi_poll(curlm.get(), nullptr, 0, std::min<int64_t>(timeoutMs, INT_MAX), nullptr);
             if (mc != CURLM_OK)