diff --git a/core/decorators.py b/core/decorators.py
index 635e123..4c241a8 100644
--- a/core/decorators.py
+++ b/core/decorators.py
@@ -8,7 +8,7 @@ def scrollable(func):
             return text
         width = widget.get('theme.width', util.format.asint(module.parameter('width', 30)))
         if util.format.asbool(module.parameter('scrolling.makewide', True)):
-            widget.minwidth = 'A'*width
+            widget.set('theme.minwidth', 'A'*width)
         if width < 0 or len(text) <= width:
             return text
 
diff --git a/core/output.py b/core/output.py
index 0a7fa00..a8358fc 100644
--- a/core/output.py
+++ b/core/output.py
@@ -86,7 +86,7 @@ class i3(object):
             'full_text': self.__decorate(module, widget, text),
             'color': self._theme.fg(widget),
             'background': self._theme.bg(widget),
-            'min_width': self.__decorate(module, widget, widget.minwidth),
+            'min_width': self.__decorate(module, widget, widget.get('theme.minwidth')),
         })
         return [attr]
 
diff --git a/core/widget.py b/core/widget.py
index 660f4f2..5dfb4d9 100644
--- a/core/widget.py
+++ b/core/widget.py
@@ -9,8 +9,6 @@ class Widget(util.store.Store, core.input.Object):
         self._module = module
         self._name = name
 
-        self.minwidth = None
-
     def name(self):
         return self._name
 
diff --git a/modules/core/cpu.py b/modules/core/cpu.py
index 3c9787f..250f177 100644
--- a/modules/core/cpu.py
+++ b/modules/core/cpu.py
@@ -17,7 +17,7 @@ import core.input
 class Module(core.module.Module):
     def __init__(self, config=None):
         super().__init__(config, core.widget.Widget(self.utilization))
-        self.widget().minwidth = self._format.format(100.0-10e-20)
+        self.widget().set('theme.minwidth', self._format.format(100.0-10e-20))
         self._utilization = psutil.cpu_percent(percpu=False)
         core.input.register(self, button=core.input.LEFT_MOUSE,
             cmd='gnome-system-monitor')