diff --git a/tests/data/test1520 b/tests/data/test1520
index c8b62fd07..5f9344d94 100644
--- a/tests/data/test1520
+++ b/tests/data/test1520
@@ -44,6 +44,9 @@ EHLO 1520
 MAIL FROM:<sender@example.com>
 RCPT TO:<recipient@example.com>
 DATA
+QUIT
+</protocol>
+<upload>
 From: different
 To: another
 
@@ -54,6 +57,7 @@ To: another
 ..
 
 body
-</protocol>
+.
+</upload>
 </verify>
 </testcase>
diff --git a/tests/libtest/lib1520.c b/tests/libtest/lib1520.c
index bef1e1364..c6d2e820a 100644
--- a/tests/libtest/lib1520.c
+++ b/tests/libtest/lib1520.c
@@ -30,16 +30,17 @@
 #define FROM "<sender@example.com>"
 
 static const char *payload_text[] = {
-"From: different\r\n",
-"To: another\r\n",
-"\r\n",
-"\r\n",
-".\r\n",
-".\r\n",
-"\r\n",
-".\r\n",
-"\r\n",
-"body"
+  "From: different\r\n",
+  "To: another\r\n",
+  "\r\n",
+  "\r\n",
+  ".\r\n",
+  ".\r\n",
+  "\r\n",
+  ".\r\n",
+  "\r\n",
+  "body",
+  NULL
 };
 
 struct upload_status {
@@ -103,6 +104,7 @@ int test(char *URL)
 
 test_cleanup:
 
+  curl_slist_free_all(rcpt_list);
   curl_easy_cleanup(curl);
   curl_global_cleanup();