diff --git a/host/hackrf-tools/src/hackrf_transfer.c b/host/hackrf-tools/src/hackrf_transfer.c
index 5d1adbc9..d7903f60 100644
--- a/host/hackrf-tools/src/hackrf_transfer.c
+++ b/host/hackrf-tools/src/hackrf_transfer.c
@@ -397,7 +397,7 @@ void stop_main_loop(void)
 #ifdef _WIN32
 	SetEvent(interrupt_handle);
 #else
-	kill(0, SIGALRM);
+	kill(getpid(), SIGALRM);
 #endif
 }