diff --git a/src/downfile.c b/src/downfile.c
index 1f012f2..e499d8a 100644
--- a/src/downfile.c
+++ b/src/downfile.c
@@ -57,7 +57,7 @@ static void on_socket_read(struct ev_loop *loop, struct ev_io *w, int revents)
         update_progress(loop, start_time, &b);
         break;
     case RTTY_FILE_MSG_BUSY:
-        fprintf(stderr, "Rtty is busy\n");
+        fprintf(stderr, "\033[31mRtty is busy\033[0m\n");
         ev_break(loop, EVBREAK_ALL);
         break;
     case RTTY_FILE_MSG_CANCELED:
@@ -65,7 +65,7 @@ static void on_socket_read(struct ev_loop *loop, struct ev_io *w, int revents)
         ev_break(loop, EVBREAK_ALL);
         break;
     case RTTY_FILE_MSG_NO_SPACE:
-        fprintf(stderr, "No enough space\n");
+        fprintf(stderr, "\033[31mNo enough space\033[0m\n");
         ev_break(loop, EVBREAK_ALL);
         break;
     default:
diff --git a/src/upfile.c b/src/upfile.c
index 00d7e52..ddb45c4 100644
--- a/src/upfile.c
+++ b/src/upfile.c
@@ -57,7 +57,7 @@ static void on_socket_read(struct ev_loop *loop, struct ev_io *w, int revents)
         update_progress(loop, start_time, &b);
         break;
     case RTTY_FILE_MSG_BUSY:
-        fprintf(stderr, "Rtty is busy\n");
+        fprintf(stderr, "\033[31mRtty is busy\033[0m\n");
         ev_break(loop, EVBREAK_ALL);
         break;
     default: