diff --git a/src/main.c b/src/main.c
index 27a06a3..7b8315a 100644
--- a/src/main.c
+++ b/src/main.c
@@ -42,6 +42,7 @@ int main(int argc, char *argv[])
         status = connect_tty();
     else
     {
+        /* Enter connect loop */
         while (true)
         {
             wait_for_tty_device();
diff --git a/src/tty.c b/src/tty.c
index a13a8e1..aac148f 100644
--- a/src/tty.c
+++ b/src/tty.c
@@ -144,7 +144,7 @@ int connect_tty(void)
 
     /* Open tty device */
     fd = open(option.tty_device, O_RDWR | O_NOCTTY );
-    if (fd <0)
+    if (fd < 0)
     {
         printf("\033[300DError: %s\n\033[300D", strerror(errno));
         exit(EXIT_FAILURE);