diff --git a/firmware/application/capture_thread.cpp b/firmware/application/capture_thread.cpp
index 7d1eb5572..64ad07530 100644
--- a/firmware/application/capture_thread.cpp
+++ b/firmware/application/capture_thread.cpp
@@ -103,7 +103,9 @@ void CaptureThread::check_fifo_isr() {
 	// flags from the baseband core.
 	const auto fifo = StreamOutput::fifo_buffers_full;
 	if( fifo ) {
-		chEvtSignalI(thread, EVT_MASK_CAPTURE_THREAD);
+		if( !fifo->is_empty() ) {
+			chEvtSignalI(thread, EVT_MASK_CAPTURE_THREAD);
+		}
 	}
 }