diff --git a/gnu/usr.bin/dialog/TESTS/prgbox b/gnu/usr.bin/dialog/TESTS/prgbox
new file mode 100755
index 00000000000..708df5d6581
--- /dev/null
+++ b/gnu/usr.bin/dialog/TESTS/prgbox
@@ -0,0 +1,12 @@
+#!/bin/sh
+DIALOG=${DIALOG=/usr/bin/dialog}
+
+$DIALOG --title "PROGRAM BOX: 'cal'" --clear \
+	--prgbox "cal" 13 27
+
+case $? in
+  0)
+    echo "OK";;
+  255)
+    echo "ESC pressed.";;
+esac