diff --git a/lib/domain/jp/ac/seikei/cc.txt b/lib/domain/jp/ac/seikei/cc.txt
new file mode 100644
index 0000000000..d0ef2b470d
--- /dev/null
+++ b/lib/domain/jp/ac/seikei/cc.txt
@@ -0,0 +1,2 @@
+成蹊大学
+Seikei University
diff --git a/lib/domains/cc.seikei.ac.jp b/lib/domains/cc.seikei.ac.jp
deleted file mode 100644
index 8b13789179..0000000000
--- a/lib/domains/cc.seikei.ac.jp
+++ /dev/null
@@ -1 +0,0 @@
-