diff --git a/libavutil/tree.h b/libavutil/tree.h
index 13fb91be50..a14fa9156a 100644
--- a/libavutil/tree.h
+++ b/libavutil/tree.h
@@ -34,10 +34,10 @@
  * @addtogroup lavu_tree AVTree
  * @ingroup lavu_data
  *
- * Low complexity tree container
+ * Low-complexity tree container
  *
  * Insertion, removal, finding equal, largest which is smaller than and
- * smallest which is larger than, all have O(log n) worst case complexity.
+ * smallest which is larger than, all have O(log n) worst-case complexity.
  * @{
  */
 
@@ -56,10 +56,11 @@ struct AVTreeNode *av_tree_node_alloc(void);
  * @param next If next is not NULL, then next[0] will contain the previous
  *             element and next[1] the next element. If either does not exist,
  *             then the corresponding entry in next is unchanged.
- * @return An element with cmp(key, elem)==0 or NULL if no such element exists in
- *         the tree.
+ * @return An element with cmp(key, elem) == 0 or NULL if no such element
+ *         exists in the tree.
  */
-void *av_tree_find(const struct AVTreeNode *root, void *key, int (*cmp)(void *key, const void *b), void *next[2]);
+void *av_tree_find(const struct AVTreeNode *root, void *key,
+                   int (*cmp)(void *key, const void *b), void *next[2]);
 
 /**
  * Insert or remove an element.
@@ -83,11 +84,17 @@ void *av_tree_find(const struct AVTreeNode *root, void *key, int (*cmp)(void *ke
  *             lower overhead compared to many malloced elements.
  *             You might want to define a function like:
  *             @code
- *             void *tree_insert(struct AVTreeNode **rootp, void *key, int (*cmp)(void *key, const void *b), AVTreeNode **next){
- *                 if(!*next) *next= av_mallocz(av_tree_node_size);
+ *             void *tree_insert(struct AVTreeNode **rootp, void *key,
+ *                               int (*cmp)(void *key, const void *b),
+ *                               AVTreeNode **next)
+ *             {
+ *                 if (!*next)
+ *                     *next = av_mallocz(av_tree_node_size);
  *                 return av_tree_insert(rootp, key, cmp, next);
  *             }
- *             void *tree_remove(struct AVTreeNode **rootp, void *key, int (*cmp)(void *key, const void *b, AVTreeNode **next)){
+ *             void *tree_remove(struct AVTreeNode **rootp, void *key,
+ *                               int (*cmp)(void *key, const void *b, AVTreeNode **next))
+ *             {
  *                 av_freep(next);
  *                 return av_tree_insert(rootp, key, cmp, next);
  *             }
@@ -98,7 +105,10 @@ void *av_tree_find(const struct AVTreeNode *root, void *key, int (*cmp)(void *ke
  *         Which one it is depends on the tree state and the implementation. You
  *         should make no assumptions that it's one or the other in the code.
  */
-void *av_tree_insert(struct AVTreeNode **rootp, void *key, int (*cmp)(void *key, const void *b), struct AVTreeNode **next);
+void *av_tree_insert(struct AVTreeNode **rootp, void *key,
+                     int (*cmp)(void *key, const void *b),
+                     struct AVTreeNode **next);
+
 void av_tree_destroy(struct AVTreeNode *t);
 
 /**
@@ -111,7 +121,9 @@ void av_tree_destroy(struct AVTreeNode *t);
  * @note The cmp function should use the same ordering used to construct the
  *       tree.
  */
-void av_tree_enumerate(struct AVTreeNode *t, void *opaque, int (*cmp)(void *opaque, void *elem), int (*enu)(void *opaque, void *elem));
+void av_tree_enumerate(struct AVTreeNode *t, void *opaque,
+                       int (*cmp)(void *opaque, void *elem),
+                       int (*enu)(void *opaque, void *elem));
 
 /**
  * @}