diff --git a/comment.lua b/comment.lua
index 9ea38fc..243d495 100644
--- a/comment.lua
+++ b/comment.lua
@@ -12,6 +12,7 @@ ft["java"] = "// %s"
 ft["julia"] = "# %s"
 ft["perl"] = "# %s"
 ft["php"] = "// %s"
+ft["puppet"] = "# %s"
 ft["rust"] = "// %s"
 ft["shell"] = "# %s"
 ft["lua"] = "-- %s"