diff --git a/morituri/common/encode.py b/morituri/common/encode.py
index 7e4e0ee..fc3bc8f 100644
--- a/morituri/common/encode.py
+++ b/morituri/common/encode.py
@@ -329,6 +329,8 @@ class EncodeTask(ctask.GstPipelineTask):
 
         self.warning('No peak found.')
 
+        self.peak = 0.0
+
         if self._duration:
             self.warning('GStreamer level element did not send messages.')
             # workaround for when the file is too short to have volume ?
@@ -336,7 +338,6 @@ class EncodeTask(ctask.GstPipelineTask):
                 self.warning('only one frame of audio, setting peak to 0.0')
                 self.peak = 0.0
 
-
 class TagReadTask(ctask.GstPipelineTask):
     """
     I am a task that reads tags.
diff --git a/morituri/rip/cd.py b/morituri/rip/cd.py
index 09b5803..b75894c 100644
--- a/morituri/rip/cd.py
+++ b/morituri/rip/cd.py
@@ -430,10 +430,9 @@ Install pycdio and run 'rip offset find' to detect your drive's offset.
                         number)
                     raise
 
-                self.stdout.write('Peak level: %.2f %%\n' % (
-                    math.sqrt(trackResult.peak) * 100.0, ))
-                self.stdout.write('Rip quality: %.2f %%\n' % (
-                    trackResult.quality * 100.0, ))
+                self.stdout.write('Peak level: {:.2%} \n'.format(math.sqrt(trackResult.peak)))
+
+                self.stdout.write('Rip quality: {:.2%}\n'.format(trackResult.quality))
 
             # overlay this rip onto the Table
             if number == 0: