diff --git a/i3pystatus/pulseaudio/__init__.py b/i3pystatus/pulseaudio/__init__.py
index fb786b4..03d0ef4 100644
--- a/i3pystatus/pulseaudio/__init__.py
+++ b/i3pystatus/pulseaudio/__init__.py
@@ -9,6 +9,7 @@ class PulseAudio(Module):
     Available formatters:
     * `{volume}` — volume in percent (0...100)
     * `{db}` — volume in decibels relative to 100 %, i.e. 100 % = 0 dB, 50 % = -18 dB, 0 % = -infinity dB
+    (the literal value for -infinity is `-∞`)
     """
 
     settings = (
@@ -77,7 +78,11 @@ class PulseAudio(Module):
         if sink_info_p:
             sink_info = sink_info_p.contents
             volume_percent = int(100 * sink_info.volume.values[0]/0x10000)
-            volume_db = int(pa_sw_volume_to_dB(sink_info.volume.values[0]))
+            volume_db = pa_sw_volume_to_dB(sink_info.volume.values[0])
+            if volume_db == float('-Infinity'):
+                volume_db = "-∞"
+            else:
+                volume_db = int(volume_db)
 
             self.output = {
                 "full_text": self.format.format(volume=volume_percent, db=volume_db),
diff --git a/setup.py b/setup.py
index bd9554c..8b9e279 100755
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@
 from setuptools import setup
 
 setup(name="i3pystatus",
-      version="3.21",
+      version="3.22",
       description="Like i3status, this generates status line for i3bar / i3wm",
       url="http://github.com/enkore/i3pystatus",
       license="MIT",