diff --git a/dcs/frames/__init__.py b/dcs/frames/__init__.py
index 75d062e..5dc59ba 100644
--- a/dcs/frames/__init__.py
+++ b/dcs/frames/__init__.py
@@ -19,6 +19,7 @@
 from .ch05_iq import Ch05IqWindow
 from .ch05_qam import Ch05QamWindow
 from .ch06_filter import Ch06FilterWindow
+from .ch06_mixer import Ch06MixerWindow
 
 
 def get_windows() -> List[Type[base.Window]]:
@@ -35,6 +36,7 @@
         Ch05IqWindow,
         Ch05QamWindow,
         Ch06FilterWindow,
+        Ch06MixerWindow,
     ]