diff --git a/filesystem/udev/rules/64-device-mapper.rules b/filesystem/udev/rules/64-device-mapper.rules
index 9555e9799..3d545a802 100644
--- a/filesystem/udev/rules/64-device-mapper.rules
+++ b/filesystem/udev/rules/64-device-mapper.rules
@@ -1,3 +1,5 @@
+# vi: set ft=conf :
+
 KERNEL=="device-mapper", SYMLINK+="mapper/control"
 
 KERNEL!="dm-*", GOTO="device_mapper_end"
diff --git a/filesystem/udev/rules/64-md-raid.rules b/filesystem/udev/rules/64-md-raid.rules
index 6bbfd126d..9e6fb546a 100644
--- a/filesystem/udev/rules/64-md-raid.rules
+++ b/filesystem/udev/rules/64-md-raid.rules
@@ -1,3 +1,5 @@
+# vi: set ft=conf :
+
 # md links hook into "change" events, when the array becomes available
 
 SUBSYSTEM!="block", GOTO="md_end"