diff --git a/albow/resource.py b/albow/resource.py
index 4cbd772..1e5b3c1 100644
--- a/albow/resource.py
+++ b/albow/resource.py
@@ -89,19 +89,26 @@ def get_font(size, *names, **kwds):
 
 
 class DummySound(object):
-    def fadeout(self, x): pass
+    def fadeout(self, x):
+        pass
 
-    def get_length(self): return 0.0
+    def get_length(self):
+        return 0.0
 
-    def get_num_channels(self): return 0
+    def get_num_channels(self):
+        return 0
 
-    def get_volume(self): return 0.0
+    def get_volume(self):
+        return 0.0
 
-    def play(self, *args): pass
+    def play(self, *args):
+        pass
 
-    def set_volume(self, x): pass
+    def set_volume(self, x):
+        pass
 
-    def stop(self): pass
+    def stop(self):
+        pass
 
 dummy_sound = DummySound()