diff --git a/src/apps/cam/kms_sink.cpp b/src/apps/cam/kms_sink.cpp
index 754b061e..de0af51e 100644
--- a/src/apps/cam/kms_sink.cpp
+++ b/src/apps/cam/kms_sink.cpp
@@ -521,6 +521,7 @@ void KMSSink::requestComplete(DRM::AtomicRequest *request)
 {
 	std::lock_guard<std::mutex> lock(lock_);

+	(void) request;
 	assert(queued_ && queued_->drmRequest_.get() == request);

 	/* Complete the active request, if any. */