1 files changed, 3 insertions, 1 deletions
diff --git a/src/heartbeatclient.c b/src/heartbeatclient.c
index 6861050..975581f 100644
--- a/src/heartbeatclient.c
+++ b/src/heartbeatclient.c
@@ -380,8 +380,10 @@ int main(int argc, char* argv[])
       ret = 3;
     else {
       serial_fd = open(opt.serial_dev_, O_RDWR | O_NOCTTY);
-      if(serial_fd < 0)
+      if(serial_fd < 0) {
+        log_printf(ERROR, "open(%s): %s", opt.serial_dev_, strerror(errno));
         ret = 2;
+      }
       else {
         ret = setup_tty(serial_fd, opt.baudrate_);
         if(ret)