Index: uspace/lib/hound/include/hound/protocol.h
===================================================================
--- uspace/lib/hound/include/hound/protocol.h	(revision a46e56be16ae82f0d007dd26c68b250f3f725ae0)
+++ uspace/lib/hound/include/hound/protocol.h	(revision 3fafe5e03bb501f8627b315f8e97330dd3996f86)
@@ -119,5 +119,5 @@
 	errno_t (*drain_stream)(void *);
 	/** Write new data to the stream */
-	errno_t (*stream_data_write)(void *, const void *, size_t);
+	errno_t (*stream_data_write)(void *, void *, size_t);
 	/** Read data from the stream */
 	errno_t (*stream_data_read)(void *, void *, size_t);