diff --git a/Maximum-line-length.md b/Maximum-line-length.md
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--- a/Maximum-line-length.md
+++ b/Maximum-line-length.md
@@ -1,3 +1,5 @@
+# Maximum line length
+
 One line of code should have no more than **80 characters** (soft limit) and must never exceed **120 characters** (hard limit).
 
 _Notice_: Travis-CI enforces the hard limit of 120 characters. Maintainers may ask you to indent lines longer than 80 characters before merging. This is generally done to keep the code as readable and maintainable as possible.