diff --git a/Transceiver52M/UHDDevice.cpp b/Transceiver52M/UHDDevice.cpp
index 9ef77a85..5075eff5 100644
--- a/Transceiver52M/UHDDevice.cpp
+++ b/Transceiver52M/UHDDevice.cpp
@@ -596,7 +596,7 @@ int uhd_device::writeSamples(short *buf, int len, bool *underrun,
 
 bool uhd_device::updateAlignment(TIMESTAMP timestamp)
 {
-	/* NOP */
+	aligned = false;
 	return true;
 }