diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 16dc4e833a3d4a67e43ead29b5fb8c49919a4b4c..2298d718c7a87ca79d60fb7dd690b7f92ae0b1ec 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -33,7 +33,7 @@
  * @{
  * @}
  *
- * @defgroup lavf_proto I/O Read/Write
+ * @defgroup lavf_io I/O Read/Write
  * @{
  * @}
  *