diff --git a/Changes.md b/Changes.md
index 590447f..765058c 100644
--- a/Changes.md
+++ b/Changes.md
@@ -19,7 +19,7 @@ Fixed:
 
 - Deprecate the use of `io.popen` in following widgets:
     * wifi_linux, wifiiw_linux, hwmontemp_linux, hddtemp_linux
-    * bat_freebsd, mem_freebsd, net_freebsd, thermal_freebsd
+    * bat_freebsd, mem_freebsd, net_freebsd, thermal_freebsd, uptime_freebsd
     * volume, gmail, mdir, mpd, fs
 - [mpd] Lua 5.3 compatibility (for real this time); also correct a typo
 - [pkg,weather,contrib/btc] Allow function call without Awesome
diff --git a/helpers.lua b/helpers.lua
index ed11043..3ce5323 100644
--- a/helpers.lua
+++ b/helpers.lua
@@ -21,7 +21,9 @@ local string = {
     lower = string.lower,
     format = string.format,
     match = string.match,
+    find = string.find,
 }
+local table = { concat = table.concat }
 local pcall = pcall
 local assert = assert
 local spawn = require("vicious.spawn")
@@ -263,14 +265,22 @@ end
 -- }}}
 
 -- {{{ Return result from sysctl variable as table (async)
-function helpers.sysctl_async(path, parse)
+function helpers.sysctl_async(path_table, parse)
     local ret = {}
-    local path = table.concat(path, " ")
+    local path = {}
 
-    spawn.with_line_callback("sysctl " .. helpers.shellquote(path), {
+    for i=1,#path_table do
+        path[i] = helpers.shellquote(path_table[i])
+    end
+
+    path = table.concat(path, " ")
+
+    spawn.with_line_callback("sysctl " .. path, {
         stdout = function(line)
-            local key, value = string.match(line, "(.+): (.+)")
-            ret[key] = value
+            if not string.find(line, "sysctl: unknown oid") then
+                local key, value = string.match(line, "(.+): (.+)")
+                ret[key] = value
+            end
         end,
         output_done = function() parse(ret) end
     })
diff --git a/widgets/thermal_freebsd.lua b/widgets/thermal_freebsd.lua
index 5a7dbe7..623df69 100644
--- a/widgets/thermal_freebsd.lua
+++ b/widgets/thermal_freebsd.lua
@@ -13,10 +13,18 @@ function thermal_freebsd.async(format, warg, callback)
     if not warg then return callback{} end
     if type(warg) ~= "table" then warg = { warg } end
 
-    local thermals = {}
-
     helpers.sysctl_async(warg, function(ret)
-        for i=1, #warg do
+        local thermals = {}
+
+        for k, v in pairs(ret) do
+            print(k, v)
+        end
+
+        for i=1,#warg do
+            print(warg[i])
+            print(ret[warg[i]])
+            print(ret["hw.acpi.thermal.tz0.temperature"])
+            print(ret['hw.acpi.thermal.tz0.temperature'])
             if ret[warg[i]] ~= nil then
                 thermals[i] = string.match(ret[warg[i]], "[%d]+")
             else
diff --git a/widgets/uptime_freebsd.lua b/widgets/uptime_freebsd.lua
index 9e075e5..09ee75e 100644
--- a/widgets/uptime_freebsd.lua
+++ b/widgets/uptime_freebsd.lua
@@ -14,17 +14,21 @@ local uptime_freebsd = {}
 
 
 -- {{{ Uptime widget type
-local function worker(format)
-    local l1, l5, l15 = string.match(helpers.sysctl("vm.loadavg"), "{ ([%d]+%.[%d]+) ([%d]+%.[%d]+) ([%d]+%.[%d]+) }")
-    local up_t = os.time() - tonumber(string.match(helpers.sysctl("kern.boottime"), "sec = ([%d]+)"))
+function uptime_freebsd.async(format, warg, callback)
+    helpers.sysctl_async({ "vm.loadavg", 
+                           "kern.boottime" }, 
+                         function(ret)
+        local l1, l5, l15 = string.match(ret["vm.loadavg"], "{ ([%d]+%.[%d]+) ([%d]+%.[%d]+) ([%d]+%.[%d]+) }")
+        local up_t = os.time() - tonumber(string.match(ret["kern.boottime"], "sec = ([%d]+)"))
 
-    -- Get system uptime
-    local up_d = math.floor(up_t   / (3600 * 24))
-    local up_h = math.floor((up_t  % (3600 * 24)) / 3600)
-    local up_m = math.floor(((up_t % (3600 * 24)) % 3600) / 60)
+        -- Get system uptime
+        local up_d = math.floor(up_t   / (3600 * 24))
+        local up_h = math.floor((up_t  % (3600 * 24)) / 3600)
+        local up_m = math.floor(((up_t % (3600 * 24)) % 3600) / 60)
 
-    return {up_d, up_h, up_m, l1, l5, l15}
+        return callback({ up_d, up_h, up_m, l1, l5, l15 })
+    end)
 end
 -- }}}
 
-return setmetatable(uptime_freebsd, { __call = function(_, ...) return worker(...) end })
+return helpers.setasyncall(uptime_freebsd)