diff --git a/tests/data/Makefile.am b/tests/data/Makefile.am
index 38ac1670f76fd8e58989e4564deb2e57c025f669..e628c5d1c660931c832e3cc6fdc12a12bee6532a 100644
--- a/tests/data/Makefile.am
+++ b/tests/data/Makefile.am
@@ -64,7 +64,7 @@ test700 test701 test702 test703 test704 test705 test706 test707 test708 \
 test709 test710 test711 test712 \
 \
 test800 test801 test802 test803 test804 test805 test806 test807 test808 \
-test809 test810 test811 test812 test813 \
+test809 test810 test811 test812 test813 test814 \
 \
 test850 test851 test852 test853 test854 test855 test856 test857 \
 \
diff --git a/tests/data/test814 b/tests/data/test814
new file mode 100644
index 0000000000000000000000000000000000000000..53ae75fe23ecfd8d718b0373c6dd25f9c63c762c
--- /dev/null
+++ b/tests/data/test814
@@ -0,0 +1,40 @@
+<testcase>
+<info>
+<keywords>
+IMAP
+CHECK
+CUSTOMREQUEST
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+</reply>
+
+#
+# Client-side
+<client>
+<server>
+imap
+</server>
+ <name>
+IMAP CHECK Mailbox (CUSTOMREQUEST)
+ </name>
+ <command>
+imap://%HOSTIP:%IMAPPORT/814 -u user:secret -X 'CHECK'
+</command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+<protocol>
+A001 CAPABILITY
+A002 LOGIN user secret
+A003 SELECT 814
+A004 CHECK
+A005 LOGOUT
+</protocol>
+</verify>
+</testcase>