diff --git a/R/req-perform-sequential.R b/R/req-perform-sequential.R
index c26aba5d..43c77ffb 100644
--- a/R/req-perform-sequential.R
+++ b/R/req-perform-sequential.R
@@ -93,7 +93,11 @@ req_perform_sequential <- function(
     interrupt = function(cnd) {
       check_repeated_interrupt()
 
-      resps <- resps[seq_len(i)]
+      # interrupt might occur before request i completes
+      if (is.null(resps[[i]])) {
+        i <- i - 1
+      }
+      resps <<- resps[seq_len(i)]
       cli::cli_alert_warning(
         "Terminating iteration; returning {i} response{?s}."
       )
diff --git a/tests/testthat/_snaps/req-perform-sequential.md b/tests/testthat/_snaps/req-perform-sequential.md
index bc8a083f..f9835bb4 100644
--- a/tests/testthat/_snaps/req-perform-sequential.md
+++ b/tests/testthat/_snaps/req-perform-sequential.md
@@ -11,3 +11,10 @@
       Error in `req_perform_sequential()`:
       ! If supplied, `paths` must be the same length as `reqs`.
 
+# user termination returns completed responses
+
+    Code
+      resps <- req_perform_sequential(reqs)
+    Message
+      ! Terminating iteration; returning 1 response.
+
diff --git a/tests/testthat/test-req-perform-sequential.R b/tests/testthat/test-req-perform-sequential.R
index 6e8da59c..f38eb600 100644
--- a/tests/testthat/test-req-perform-sequential.R
+++ b/tests/testthat/test-req-perform-sequential.R
@@ -72,3 +72,20 @@ test_that("mocking works", {
   expect_equal(resps[[1]]$request, req_200)
   expect_s3_class(resps[[2]], "httr2_http_404")
 })
+
+test_that("user termination returns completed responses", {
+  local_mocked_responses(function(req) {
+    if (req$url == "https://interrupt") {
+      interrupt()
+    }
+    response()
+  })
+  reqs <- list(
+    request("https://ok"),
+    request("https://interrupt"),
+    request("https://ok")
+  )
+
+  expect_snapshot(resps <- req_perform_sequential(reqs))
+  expect_length(resps, 1)
+})