diff --git a/libavcodec/bitstream.h b/libavcodec/bitstream.h
index ae89b5e77b..14e54e40ff 100644
--- a/libavcodec/bitstream.h
+++ b/libavcodec/bitstream.h
@@ -364,7 +364,7 @@ static inline void set_put_bits_buffer_size(PutBitContext *s, int size){
 
 /* Bitstream reader API docs:
 name
-    abritary name which is used as prefix for the internal variables
+    arbitrary name which is used as prefix for the internal variables
 
 gb
     getbitcontext