diff --git a/test/unit_test.c b/test/unit_test.c
index 1acb23e3..2b432b14 100644
--- a/test/unit_test.c
+++ b/test/unit_test.c
@@ -899,6 +899,10 @@ static void test_http_server(void) {
   ASSERT(fetch(&mgr, buf, url,
                "POST /a.txt HTTP/1.0\n"
                "Content-Length: 19000000000000000000\n\n") == 0);
+  ASSERT(fetch(&mgr, buf, url,
+               "GET /a.txt HTTP/1.0\n"
+               ":\n"  // truncated header
+               "Content-Length: 1\n\n") == 0);
 
   {
     extern char *mg_http_etag(char *, size_t, size_t, time_t);