diff --git a/builtin/misc_helpers.lua b/builtin/misc_helpers.lua
index 526be049..743a9cfd 100644
--- a/builtin/misc_helpers.lua
+++ b/builtin/misc_helpers.lua
@@ -57,7 +57,7 @@ function dump(o, dumped)
 		dumped[o] = true
 		local t = {}
 		for k,v in pairs(o) do
-			t[#t+1] = "" .. dump(k, dumped) .. " = " .. dump(v, dumped)
+			t[#t+1] = "[" .. dump(k, dumped) .. "] = " .. dump(v, dumped)
 		end
 		return "{" .. table.concat(t, ", ") .. "}"
 	elseif type(o) == "boolean" then