diff --git a/README.md b/README.md
index 87248b5..a1c11e6 100644
--- a/README.md
+++ b/README.md
@@ -112,6 +112,7 @@ To the extent possible under law, the author has waived all copyright and relate
 - [chicken](chicken.chicken)
 - [crystal](crystal.cr)
 - [Cascading Style Sheets .css](css.css)
+- [diff](c.patch)
 - [eiffel](eiffel.e)
 - [elixir](elixir.ex)
 - [Git commit](https://github.com/mathiasbynens/small/commit/63a7f20c7b442c21bd9b6d4a80fdbea77e59dc6b)
diff --git a/c.patch b/c.patch
new file mode 100644
index 0000000..e63b4ba
--- /dev/null
+++ b/c.patch
@@ -0,0 +1,7 @@
+diff --git c.c c.c
+index f7fb591..c61f0be 100644
+--- c.c
++++ c.c
+@@ -1 +1 @@
+-int main;
++lint main;