diff --git a/Changes.md b/Changes.md
index 765058c..de6da4a 100644
--- a/Changes.md
+++ b/Changes.md
@@ -19,7 +19,8 @@ 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, uptime_freebsd
+    * bat_freebsd, mem_freebsd, net_freebsd, thermal_freebsd, uptime_freebsd,
+      cpu_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/widgets/cpu_freebsd.lua b/widgets/cpu_freebsd.lua
index 044286c..c6e5272 100644
--- a/widgets/cpu_freebsd.lua
+++ b/widgets/cpu_freebsd.lua
@@ -1,7 +1,5 @@
 -- {{{ Grab environment
 local helpers = require("vicious.helpers")
-local tonumber = tonumber
-local setmetatable = setmetatable
 local math = { floor = math.floor }
 local string = { gmatch = string.gmatch }
 -- }}}
@@ -16,54 +14,55 @@ local cpu_total = {}
 local cpu_idle = {}
 
 -- {{{ CPU widget type
-local function worker(format)
-    local cp_times = helpers.sysctl("kern.cp_times")
+function cpu_freebsd.async(format, warg, callback)
     local matches = {}
     local tmp_total = {}
     local tmp_idle = {}
     local tmp_usage = {}
 
-    -- Read input data
-    for v in string.gmatch(cp_times, "([%d]+)") do
-        table.insert(matches, v)
-    end
+    helpers.sysctl_async({ "kern.cp_times" }, function(ret)
+        -- Read input data
+        for v in string.gmatch(ret["kern.cp_times"], "([%d]+)") do
+            table.insert(matches, v)
+        end
 
-    -- Set first value of function tables
-    if #cpu_total == 0 then  -- check for empty table
+        -- Set first value of function tables
+        if #cpu_total == 0 then  -- check for empty table
+            for i = 1, #matches / 5 + 1 do
+                cpu_total[i] = 0
+                cpu_idle[i] = 0
+            end
+        end
         for i = 1, #matches / 5 + 1 do
-            cpu_total[i] = 0
-            cpu_idle[i] = 0
+            tmp_total[i] = 0
+            tmp_idle[i] = 0
+            tmp_usage[i] = 0
         end
-    end
-    for i = 1, #matches / 5 + 1 do
-        tmp_total[i] = 0
-        tmp_idle[i] = 0
-        tmp_usage[i] = 0
-    end
 
-    -- CPU usage 
-    for i, v in ipairs(matches) do
-        local index = math.floor((i-1) / 5) + 2 -- current cpu
+        -- CPU usage 
+        for i, v in ipairs(matches) do
+            local index = math.floor((i-1) / 5) + 2 -- current cpu
 
-        tmp_total[1] = tmp_total[1] + v
-        tmp_total[index] = tmp_total[index] + v
+            tmp_total[1] = tmp_total[1] + v
+            tmp_total[index] = tmp_total[index] + v
 
-        if (i-1) % 5 == 4 then
-            tmp_idle[1] = tmp_idle[1] + v
-            tmp_idle[index] = tmp_idle[index] + v
+            if (i-1) % 5 == 4 then
+                tmp_idle[1] = tmp_idle[1] + v
+                tmp_idle[index] = tmp_idle[index] + v
+            end
         end
-    end
 
-    for i = 1, #tmp_usage do
-        tmp_usage[i] = tmp_total[i] - cpu_total[i]
-        tmp_usage[i] = math.floor((tmp_usage[i] - (tmp_idle[i] - cpu_idle[i])) / tmp_usage[i] * 100)
-    end
+        for i = 1, #tmp_usage do
+            tmp_usage[i] = tmp_total[i] - cpu_total[i]
+            tmp_usage[i] = math.floor((tmp_usage[i] - (tmp_idle[i] - cpu_idle[i])) / tmp_usage[i] * 100)
+        end
 
-    cpu_total = tmp_total
-    cpu_idle = tmp_idle
+        cpu_total = tmp_total
+        cpu_idle = tmp_idle
 
-    return tmp_usage
+        return callback(tmp_usage)
+    end)
 end
 -- }}}
 
-return setmetatable(cpu_freebsd, { __call = function(_, ...) return worker(...) end })
+return helpers.setasyncall(cpu_freebsd)
diff --git a/widgets/thermal_freebsd.lua b/widgets/thermal_freebsd.lua
index 623df69..c550f1a 100644
--- a/widgets/thermal_freebsd.lua
+++ b/widgets/thermal_freebsd.lua
@@ -16,15 +16,7 @@ function thermal_freebsd.async(format, warg, callback)
     helpers.sysctl_async(warg, function(ret)
         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 09ee75e..a48f64e 100644
--- a/widgets/uptime_freebsd.lua
+++ b/widgets/uptime_freebsd.lua
@@ -1,6 +1,5 @@
 -- {{{ Grab environment
 local tonumber = tonumber
-local setmetatable = setmetatable
 local math = { floor = math.floor }
 local string = { match = string.match }
 local helpers = require("vicious.helpers")