diff --git a/lib/domains/kr/ac/edu.txt b/lib/domains/kr/ac/edu.txt
deleted file mode 100644
index ae7fa3dda4..0000000000
--- a/lib/domains/kr/ac/edu.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-충청대학교
-chungcheong university
\ No newline at end of file
diff --git a/lib/domains/kr/ac/ok.txt b/lib/domains/kr/ac/ok.txt
new file mode 100644
index 0000000000..bf5de6c658
--- /dev/null
+++ b/lib/domains/kr/ac/ok.txt
@@ -0,0 +1,2 @@
+충청대학교
+chungcheong university