diff --git a/av/audio/format.pyx b/av/audio/format.pyx
index f86e7b604..c67f2fb9c 100644
--- a/av/audio/format.pyx
+++ b/av/audio/format.pyx
@@ -82,7 +82,7 @@ cdef class AudioFormat:
 
     @property
     def is_packed(self):
-        """Is this a planar format?
+        """Is this a packed format?
 
         Strictly opposite of :attr:`is_planar`.