diff --git a/src/libkeepalive.c b/src/libkeepalive.c
index a08bd98..06b66ca 100644
--- a/src/libkeepalive.c
+++ b/src/libkeepalive.c
@@ -1,3 +1,4 @@
+/* vim: set ts=2 sw=2 et: */
 /*
    _ _ _     _                         _ _
   | (_) |__ | | _____  ___ _ __   __ _| (_)_   _____
diff --git a/test/test.c b/test/test.c
index 756d7ae..c793225 100644
--- a/test/test.c
+++ b/test/test.c
@@ -1,3 +1,4 @@
+/* vim: set ts=2 sw=2 et: */
 /*
    _ _ _     _                         _ _
   | (_) |__ | | _____  ___ _ __   __ _| (_)_   _____