diff --git a/tests/check-all-with-cygwin.mak b/tests/check-all-with-cygwin.mak
index f6af8e76..9579fba1 100644
--- a/tests/check-all-with-cygwin.mak
+++ b/tests/check-all-with-cygwin.mak
@@ -119,6 +119,7 @@ check : all
 	env BINDIR=$(bindir) $(srcdir)/check-stateful $(srcdir) ISO-2022-JP
 	env BINDIR=$(bindir) $(srcdir)/check-stateful $(srcdir) ISO-2022-JP-2
 	env BINDIR=$(bindir) $(srcdir)/check-stateful $(srcdir) ISO-2022-JP-1
+	env BINDIR=$(bindir) $(srcdir)/check-stateful $(srcdir) ISO-2022-JP-MS
 	env BINDIR=$(bindir) $(srcdir)/check-stateless $(srcdir) EUC-CN
 	env BINDIR=$(bindir) $(srcdir)/check-stateless $(srcdir) GBK
 	env BINDIR=$(bindir) $(srcdir)/check-stateless $(srcdir) CP936
diff --git a/tests/check-stateful b/tests/check-stateful
index f2afacd4..984289a9 100755
--- a/tests/check-stateful
+++ b/tests/check-stateful
@@ -12,6 +12,8 @@ if test -f "${srcdir}"/"$charsetf"-snippet.alt; then
   $bindir/iconv -f "$charset" -t UTF-8 < "${srcdir}"/"$charsetf"-snippet.alt > tmp-snippet
   cmp "${srcdir}"/"$charsetf"-snippet.UTF-8 tmp-snippet
   rc1=$?
+else
+  rc1=0
 fi
 $bindir/iconv -f "$charset" -t UTF-8 < "${srcdir}"/"$charsetf"-snippet > tmp-snippet
 cmp -s "${srcdir}"/"$charsetf"-snippet.UTF-8 tmp-snippet