diff --git a/src/drivers/gps/ashtech.cpp b/src/drivers/gps/ashtech.cpp
index e541064133..c7cd66f801 100644
--- a/src/drivers/gps/ashtech.cpp
+++ b/src/drivers/gps/ashtech.cpp
@@ -671,7 +671,9 @@ int ASHTECH::configure(unsigned &baudrate)
 	for (unsigned int baud_i = 0; baud_i < sizeof(baudrates_to_try) / sizeof(baudrates_to_try[0]); baud_i++) {
 		baudrate = baudrates_to_try[baud_i];
 		set_baudrate(_fd, baudrate);
-		write(_fd, comm, sizeof(comm));
+		if (write(_fd, comm, sizeof(comm)) != sizeof(comm)) {
+			return 1;
+		}
 	}
 
 	set_baudrate(_fd, 115200);