Index: uspace/lib/c/generic/async.c
===================================================================
--- uspace/lib/c/generic/async.c	(revision 220210c87b40c13a3769a4d1b82fd6ee888d1324)
+++ uspace/lib/c/generic/async.c	(revision d2b66d44598fdab0390179f98a5859727b100bec)
@@ -2090,5 +2090,6 @@
  * @param arg   User defined argument.
  * @param flags Storage for the received flags. Can be NULL.
- * @param dst   Destination address space area base. Cannot be NULL.
+ * @param dst   Address of the storage for the destination address space area
+ *              base address. Cannot be NULL.
  *
  * @return Zero on success or a negative error code from errno.h.
@@ -2218,5 +2219,6 @@
  *
  * @param callid Hash of the IPC_M_DATA_WRITE call to answer.
- * @param dst    Destination address space area base address.
+ * @param dst    Address of the storage for the destination address space area
+ *               base address.
  *
  * @return Zero on success or a value from @ref errno.h on failure.