diff --git a/userrc.in b/userrc.in
index 3434e8f..6a1b349 100644
--- a/userrc.in
+++ b/userrc.in
@@ -1,4 +1,5 @@
 #!@BASH@
+# vim: ft=sh
 
 msg() { printf '%s\n' "$*"; }
 err() { printf '%s\n' "$*" >&2; }