diff --git a/ftdetect/ttcn.vim b/ftdetect/ttcn.vim
new file mode 100644
index 0000000..9d10eb8
--- /dev/null
+++ b/ftdetect/ttcn.vim
@@ -0,0 +1,2 @@
+" TTCN filetype
+au BufRead,BufNewFile *.{ttcn,ttcn3} set filetype=ttcn