diff --git a/bumblebee/modules/cpu.py b/bumblebee/modules/cpu.py
index ed5b856..3e4bf72 100644
--- a/bumblebee/modules/cpu.py
+++ b/bumblebee/modules/cpu.py
@@ -20,8 +20,8 @@ import bumblebee.engine
 class Module(bumblebee.engine.Module):
     def __init__(self, engine, config):
         widget = bumblebee.output.Widget(full_text=self.utilization)
-        widget.set("theme.minwidth", "99.9%")
         super(Module, self).__init__(engine, config, widget)
+        widget.set("theme.minwidth", self._format.format(10.0-10e-20))
         self._utilization = psutil.cpu_percent(percpu=False)
         engine.input.register_callback(self, button=bumblebee.input.LEFT_MOUSE,
                                        cmd="gnome-system-monitor")