1 files changed, 1 insertions, 0 deletions
diff --git a/src/demos/tunnel.c b/src/demos/tunnel.c
index 6e48ad46..dea689e0 100644
--- a/src/demos/tunnel.c
+++ b/src/demos/tunnel.c
@@ -470,6 +470,7 @@ draw(void)
          GLfloat fps = Frames / seconds;
          sprintf(frbuf, "Frame rate: %f", fps);
          printf("%s\n", frbuf);
+         fflush(stdout);
          T0 = t;
          Frames = 0;
       }