diff --git a/dcs/frames/__init__.py b/dcs/frames/__init__.py
index 0aa1b95..e8ebfbf 100644
--- a/dcs/frames/__init__.py
+++ b/dcs/frames/__init__.py
@@ -16,6 +16,7 @@
 from .ch04_window import Ch04WindowWindow
 from .ch04_quantization_noise import Ch04QuantizationNoiseWindow
 from .ch05_modulation import Ch05ModulationWindow
+from .ch05_iq import Ch05IqWindow
 
 
 def get_windows() -> List[Type[base.Window]]:
@@ -29,6 +30,7 @@
         Ch04WindowWindow,
         Ch04QuantizationNoiseWindow,
         Ch05ModulationWindow,
+        Ch05IqWindow,
     ]