diff --git a/avi/mediafourcc.cpp b/avi/mediafourcc.cpp
index e8cc820..66534e5 100644
--- a/avi/mediafourcc.cpp
+++ b/avi/mediafourcc.cpp
@@ -6,6 +6,9 @@ namespace Media {
 
 namespace Fourccs {
 
+/*!
+ * \brief Returns the media format for the specified \a fourcc.
+ */
 MediaFormat fourccToMediaFormat(uint32 fourcc) {
     switch(fourcc) {
     case XvidMpeg4: