diff --git a/source/C/command_line.rst b/source/C/command_line.rst
index 093d455e..32582676 100644
--- a/source/C/command_line.rst
+++ b/source/C/command_line.rst
@@ -1,5 +1,5 @@
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-Appendix C Command line
+Appendix C Command Line
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 The command line or CLI is text interface to your computer and an alternative to graphical user interfaces like windows. It typically involves typing text commands into a terminal to perform some operation. Although not necessary to learn, it can be helpful. The terminal which can be launched from :kbd:`Control + Alt + T` is a command line running in a window.