diff --git a/test/vpnor/Makefile.am.include b/test/vpnor/Makefile.am.include
index 0d24807..c249ef9 100644
--- a/test/vpnor/Makefile.am.include
+++ b/test/vpnor/Makefile.am.include
@@ -263,6 +263,19 @@
 test_vpnor_dump_flash_LDFLAGS = $(OESDK_TESTCASE_FLAGS)
 test_vpnor_dump_flash_LDADD = $(VPNOR_LDADD)
 
+test_vpnor_create_read_window_size_SOURCES = \
+	$(TEST_MBOX_VPNOR_SRCS) $(TEST_MOCK_SRCS) \
+	mboxd_msg.c \
+	mboxd_windows.c \
+	mboxd_lpc.c \
+	mboxd_lpc_virtual.cpp \
+	mboxd_pnor_partition_table.cpp \
+	mboxd_flash_virtual.cpp \
+	pnor_partition.cpp \
+	%reldir%/create_read_window_size.cpp
+test_vpnor_create_read_window_size_LDFLAGS = $(OESDK_TESTCASE_FLAGS)
+test_vpnor_create_read_window_size_LDADD = $(VPNOR_LDADD)
+
 if VIRTUAL_PNOR_ENABLED
 check_PROGRAMS += \
 	%reldir%/create_pnor_partition_table \
@@ -287,7 +300,9 @@
 	%reldir%/create_read_window_partition_invalid \
 	%reldir%/read_patch \
 	%reldir%/write_patch_resize \
-	%reldir%/dump_flash
+	%reldir%/dump_flash \
+	%reldir%/create_read_window_size
 
 XFAIL_TESTS += %reldir%/dump_flash
+XFAIL_TESTS += %reldir%/create_read_window_size
 endif
diff --git a/test/vpnor/create_read_window_size.cpp b/test/vpnor/create_read_window_size.cpp
new file mode 100644
index 0000000..cfbb881
--- /dev/null
+++ b/test/vpnor/create_read_window_size.cpp
@@ -0,0 +1,77 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright (C) 2018 IBM Corp.
+
+#include <assert.h>
+#include <experimental/filesystem>
+
+#include "config.h"
+#include "mboxd_pnor_partition_table.h"
+
+extern "C" {
+#include "test/mbox.h"
+#include "test/system.h"
+}
+
+#include "test/vpnor/tmpd.hpp"
+static const auto BLOCK_SIZE = 4096;
+static const auto ERASE_SIZE = BLOCK_SIZE;
+static const auto WINDOW_SIZE = 2 * BLOCK_SIZE;
+static const auto MEM_SIZE = WINDOW_SIZE;
+static const auto N_WINDOWS = 1;
+static const auto PNOR_SIZE = 4 * BLOCK_SIZE;
+
+const std::string toc[] = {
+    "partition01=ONE,00001000,00002000,80,ECC,READONLY",
+    "partition02=TWO,00002000,00004000,80,ECC,READONLY",
+};
+
+static const uint8_t get_info[] = {0x02, 0x00, 0x02, 0x00, 0x00, 0x00,
+                                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                                   0x00, 0x00, 0x00, 0x00};
+
+static const uint8_t request_one[] = {0x04, 0x01, 0x01, 0x00, 0x02, 0x00,
+                                      0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                                      0x00, 0x00, 0x00, 0x00};
+
+static const uint8_t response_one[] = {0x04, 0x01, 0xfe, 0xff, 0x01,
+                                       0x00, 0x01, 0x00, 0x00, 0x00,
+                                       0x00, 0x00, 0x00, 0x01};
+
+static const uint8_t request_two[] = {0x04, 0x02, 0x02, 0x00, 0x02, 0x00,
+                                      0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                                      0x00, 0x00, 0x00, 0x00};
+
+static const uint8_t response_two[] = {0x04, 0x02, 0xfe, 0xff, 0x02,
+                                       0x00, 0x02, 0x00, 0x00, 0x00,
+                                       0x00, 0x00, 0x00, 0x01};
+
+namespace test = openpower::virtual_pnor::test;
+
+int main()
+{
+    struct mbox_context *ctx;
+
+    system_set_reserved_size(MEM_SIZE);
+    system_set_mtd_sizes(PNOR_SIZE, ERASE_SIZE);
+
+    ctx = mbox_create_test_context(N_WINDOWS, WINDOW_SIZE);
+    test::VpnorRoot root(ctx, toc, BLOCK_SIZE);
+    init_vpnor_from_paths(ctx);
+
+    int rc = mbox_command_dispatch(ctx, get_info, sizeof(get_info));
+    assert(rc == 1);
+
+    rc = mbox_command_dispatch(ctx, request_one, sizeof(request_one));
+    assert(rc == 1);
+
+    rc = mbox_cmp(ctx, response_one, sizeof(response_one));
+    assert(rc == 0);
+
+    rc = mbox_command_dispatch(ctx, request_two, sizeof(request_two));
+    assert(rc == 1);
+
+    rc = mbox_cmp(ctx, response_two, sizeof(response_two));
+    assert(rc == 0);
+
+    return rc;
+}