diff --git a/lib/domains/vn/vnu/coltech b/lib/domains/vn/vnu/coltech
deleted file mode 100644
index 4c13b2b530..0000000000
--- a/lib/domains/vn/vnu/coltech
+++ /dev/null
@@ -1 +0,0 @@
-University of Engineering and Technology, Vietnam National University Hanoi
diff --git a/lib/domains/vn/vnu/coltech.txt b/lib/domains/vn/vnu/coltech.txt
new file mode 100644
index 0000000000..93d86442d8
--- /dev/null
+++ b/lib/domains/vn/vnu/coltech.txt
@@ -0,0 +1 @@
+Vietnam National University Hanoi