diff --git a/lib/tests/cjk/cur/test1 b/lib/tests/cjk/cur/test1
new file mode 100644
index 00000000..15387907
--- /dev/null
+++ b/lib/tests/cjk/cur/test1
@@ -0,0 +1,10 @@
+From: "Bob" <bob@builder.com>
+Subject: CJK 1
+To: "Chase" <chase@ppatrol.org>
+Date: Thu, 18 Nov 2021 08:35:34 +0200
+Message-Id: 112342343e9dfo.fsf@builder.com
+User-Agent: mu4e 1.7.5; emacs 29.0.50
+
+    サーバがダウンしました
+
+https://github.com/djcb/mu/issues/1428
diff --git a/lib/tests/cjk/cur/test2 b/lib/tests/cjk/cur/test2
new file mode 100644
index 00000000..875bff52
--- /dev/null
+++ b/lib/tests/cjk/cur/test2
@@ -0,0 +1,10 @@
+From: "Bob" <bob@builder.com>
+Subject: CJK 2
+To: "Chase" <chase@ppatrol.org>
+Date: Thu, 18 Nov 2021 08:35:34 +0200
+Message-Id: 271r2342343e9dfo.fsf@builder.com
+User-Agent: mu4e 1.7.5; emacs 29.0.50
+
+    スポンサーシップ募集
+
+https://github.com/djcb/mu/issues/1428
diff --git a/lib/tests/cjk/cur/test3 b/lib/tests/cjk/cur/test3
new file mode 100644
index 00000000..f0efe718
--- /dev/null
+++ b/lib/tests/cjk/cur/test3
@@ -0,0 +1,10 @@
+From: "Bob" <bob@builder.com>
+Subject: CJK 3
+To: "Chase" <chase@ppatrol.org>
+Date: Thu, 18 Nov 2021 08:35:34 +0200
+Message-Id: 3871r2342343e9dfo.fsf@builder.com
+User-Agent: mu4e 1.7.5; emacs 29.0.50
+
+    サービス開始について
+
+https://github.com/djcb/mu/issues/1428
diff --git a/lib/tests/cjk/cur/test4 b/lib/tests/cjk/cur/test4
new file mode 100644
index 00000000..2bad3998
--- /dev/null
+++ b/lib/tests/cjk/cur/test4
@@ -0,0 +1,10 @@
+From: "Bob" <bob@builder.com>
+Subject: CJK 4
+To: "Chase" <chase@ppatrol.org>
+Date: Thu, 18 Nov 2021 08:35:34 +0200
+Message-Id: 4871r2342343e9dfo.fsf@builder.com
+User-Agent: mu4e 1.7.5; emacs 29.0.50
+
+    ショルダーバック
+
+https://github.com/djcb/mu/issues/1428
diff --git a/meson.build b/meson.build
index a86db91b..6bb0ee91 100644
--- a/meson.build
+++ b/meson.build
@@ -100,6 +100,7 @@ testmaildir=join_paths(meson.current_source_dir(), 'lib', 'tests')
 config_h_data.set_quoted('MU_TESTMAILDIR',  join_paths(testmaildir, 'testdir'))
 config_h_data.set_quoted('MU_TESTMAILDIR2',  join_paths(testmaildir, 'testdir2'))
 config_h_data.set_quoted('MU_TESTMAILDIR4',  join_paths(testmaildir, 'testdir4'))
+config_h_data.set_quoted('MU_TESTMAILDIR_CJK',  join_paths(testmaildir, 'cjk'))
 
 ################################################################################
 # hard dependencies
diff --git a/mu/tests/test-mu-query.cc b/mu/tests/test-mu-query.cc
index 2587eb57..b31ba0ce 100644
--- a/mu/tests/test-mu-query.cc
+++ b/mu/tests/test-mu-query.cc
@@ -559,6 +559,43 @@ test_mu_query_threads_compilation_error(void)
 	                 3);
 }
 
+/* https://github.com/djcb/mu/issues/1428 */
+static void
+test_mu_query_cjk(void)
+{
+	/* XXX: this doesn't pass yet; return for now */
+	g_test_skip("skip CJK tests");
+	return;
+
+	{
+		g_unsetenv("XAPIAN_CJK_NGRAM");
+		const auto xpath = make_database(MU_TESTMAILDIR_CJK);
+		g_assert_cmpuint(run_and_count_matches(xpath,
+						       "サーバがダウンしました",
+						       QueryFlags::None),
+				 ==, 1);
+		g_assert_cmpuint(run_and_count_matches(xpath,
+						       "サーバ",
+						       QueryFlags::None),
+				 ==, 0);
+	}
+
+
+	{
+		g_setenv("XAPIAN_CJK_NGRAM", "1", TRUE);
+		const auto xpath = make_database(MU_TESTMAILDIR_CJK);
+		g_assert_cmpuint(run_and_count_matches(xpath,
+						       "サーバがダウンしました",
+						       QueryFlags::None),
+				 ==, 0);
+		g_assert_cmpuint(run_and_count_matches(xpath,
+						       "サーバ",
+						       QueryFlags::None),
+				 ==, 0);
+	}
+}
+
+
 int
 main(int argc, char* argv[])
 {
@@ -608,6 +645,9 @@ main(int argc, char* argv[])
 	g_test_add_func("/mu-query/test-mu-query-threads-compilation-error",
 	                test_mu_query_threads_compilation_error);
 
+	g_test_add_func("/mu-query/test-mu-query-cjk",
+	                test_mu_query_cjk);
+
 	if (!g_test_verbose())
 		g_log_set_handler(NULL,
 		                  (GLogLevelFlags)(G_LOG_LEVEL_MASK | G_LOG_FLAG_FATAL |