diff --git a/gateware/adat_usb2_audio_interface.py b/gateware/adat_usb2_audio_interface.py
index 7923ac1..93362b9 100644
--- a/gateware/adat_usb2_audio_interface.py
+++ b/gateware/adat_usb2_audio_interface.py
@@ -147,7 +147,7 @@ def elaborate(self, platform):
         adat_receivers    = []
         adat_pads         = []
         for i in range(1, 5):
-            transmitter = ADATTransmitter(fifo_depth=8)
+            transmitter = ADATTransmitter(fifo_depth=4)
             setattr(m.submodules, f"adat{i}_transmitter", transmitter)
             adat_transmitters.append(transmitter)