diff --git a/src/aact/__about__.py b/src/aact/__about__.py
index 034f46c..6526deb 100644
--- a/src/aact/__about__.py
+++ b/src/aact/__about__.py
@@ -1 +1 @@
-__version__ = "0.0.6"
+__version__ = "0.0.7"
diff --git a/src/aact/nodes/listener.py b/src/aact/nodes/listener.py
index 28efe0e..53c1650 100644
--- a/src/aact/nodes/listener.py
+++ b/src/aact/nodes/listener.py
@@ -33,7 +33,7 @@ def __init__(
         redis_url: str,
         channels: int = 1,
         rate: int = 44100,
-        format: int = pyaudio.paInt16,
+        format: int = pyaudio.paInt16 if PYAUDIO_AVAILABLE else 0,
     ):
         if not PYAUDIO_AVAILABLE:
             raise ImportError(