diff --git a/tests/dl-out.expect b/tests/dl-out.expect
new file mode 100644
index 00000000..221be93f
--- /dev/null
+++ b/tests/dl-out.expect
@@ -0,0 +1,2 @@
+serve directory . on http://127.0.0.1:8083
+       0        0 52428800 data2
diff --git a/tests/download_chunked.sh b/tests/download_chunked.sh
new file mode 100755
index 00000000..f28d8234
--- /dev/null
+++ b/tests/download_chunked.sh
@@ -0,0 +1,12 @@
+#!/usr/bin/env sh
+
+SERVER=$1
+"$SERVER" . -p 8083 &
+
+sleep 0.1
+
+curl -N 'http://localhost:8083/foo_50' -o data2 \
+  -H 'Tranfer-encoding: chunked'
+
+kill %1
+wc data2
diff --git a/tests/dune b/tests/dune
index 6c270bbd..37621ada 100644
--- a/tests/dune
+++ b/tests/dune
@@ -29,3 +29,14 @@
 (rule
   (alias runtest)
   (action (diff upload-out.expect upload-out)))
+
+(rule
+  (targets dl-out)
+  (deps (:bin ../src/bin/http_of_dir.exe) foo_50)
+  (locks /port)
+  (action (with-stdout-to %{targets}
+                          (run ./download_chunked.sh %{bin}))))
+
+(rule
+  (alias runtest)
+  (action (diff dl-out.expect dl-out)))