1 file changed, 10 insertions, 3 deletions

diff --git a/source/ui-patch.h b/source/ui-patch.h
index 7a6cacd..4dfe8bc 100644
--- a/source/ui-patch.h
+++ b/source/ui-patch.h
@@ -1,7 +1,14 @@
-#ifndef UI_PATCH_H
-#define UI_PATCH_H
+/*
+ * The patch page, which hands back a commit or a range of commits as a plain
+ * text mail patch that git am can apply. Any of the newer revision, the older
+ * one, and the path that limits the diff may be null, meaning the current
+ * head, the first parent, and the whole tree.
+ */
+
+#ifndef CGIT_UI_PATCH_H
+#define CGIT_UI_PATCH_H
 
 extern void cgit_print_patch(const char *new_rev, const char *old_rev,
 			     const char *prefix);
 
-#endif /* UI_PATCH_H */
+#endif // CGIT_UI_PATCH_H