diff --git a/docs/source/tips.rst b/docs/source/tips.rst
index 323d3d1e4eaf..88bbf24cf2b2 100644
--- a/docs/source/tips.rst
+++ b/docs/source/tips.rst
@@ -20,7 +20,7 @@ If your home directory is not suited to caching the kernels (e.g. in case that i
 See `CuPy Overview <https://docs-cupy.chainer.org/en/stable/overview.html>`_ for more details.
 
 
-mnist example does not converge in CPU mode on Mac OS X
+MNIST example does not converge in CPU mode on Mac OS X
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 .. note::