Index: uspace/lib/c/generic/async.c
===================================================================
--- uspace/lib/c/generic/async.c	(revision 1c99eae3ddfff6466688b16a6f921dfb99e466e6)
+++ uspace/lib/c/generic/async.c	(revision b76a7329a5e0d6492e93d0011920192b1d80a035)
@@ -98,4 +98,5 @@
 #include <ipc/ipc.h>
 #include <async.h>
+#include "private/async.h"
 #undef LIBC_ASYNC_C_
 
@@ -113,5 +114,4 @@
 #include <stdlib.h>
 #include <macros.h>
-#include "private/async.h"
 
 #define CLIENT_HASH_TABLE_BUCKETS  32
Index: uspace/lib/c/generic/async_obsolete.c
===================================================================
--- uspace/lib/c/generic/async_obsolete.c	(revision 1c99eae3ddfff6466688b16a6f921dfb99e466e6)
+++ uspace/lib/c/generic/async_obsolete.c	(revision b76a7329a5e0d6492e93d0011920192b1d80a035)
@@ -38,4 +38,5 @@
 #include <async.h>
 #include <async_obsolete.h>
+#include "private/async.h"
 #undef LIBC_ASYNC_C_
 #undef LIBC_ASYNC_OBSOLETE_C_
@@ -44,5 +45,4 @@
 #include <malloc.h>
 #include <errno.h>
-#include "private/async.h"
 
 /** Send message and return id of the sent message.
Index: uspace/lib/c/generic/private/async.h
===================================================================
--- uspace/lib/c/generic/private/async.h	(revision 1c99eae3ddfff6466688b16a6f921dfb99e466e6)
+++ uspace/lib/c/generic/private/async.h	(revision b76a7329a5e0d6492e93d0011920192b1d80a035)
@@ -36,9 +36,52 @@
 #define LIBC_PRIVATE_ASYNC_H_
 
-#include <ipc/common.h>
+#include <async.h>
 #include <adt/list.h>
 #include <fibril.h>
+#include <fibril_synch.h>
 #include <sys/time.h>
 #include <bool.h>
+
+/** Session data */
+struct _async_sess {
+	/** List of inactive exchanges */
+	list_t exch_list;
+	
+	/** Exchange management style */
+	exch_mgmt_t mgmt;
+	
+	/** Session identification */
+	int phone;
+	
+	/** First clone connection argument */
+	sysarg_t arg1;
+	
+	/** Second clone connection argument */
+	sysarg_t arg2;
+	
+	/** Third clone connection argument */
+	sysarg_t arg3;
+	
+	/** Exchange mutex */
+	fibril_mutex_t mutex;
+	
+	/** Number of opened exchanges */
+	atomic_t refcnt;
+};
+
+/** Exchange data */
+struct _async_exch {
+	/** Link into list of inactive exchanges */
+	link_t sess_link;
+	
+	/** Link into global list of inactive exchanges */
+	link_t global_link;
+	
+	/** Session pointer */
+	async_sess_t *sess;
+	
+	/** Exchange identification */
+	int phone;
+};
 
 /** Structures of this type are used to track the timeout events. */
Index: uspace/lib/c/include/async.h
===================================================================
--- uspace/lib/c/include/async.h	(revision 1c99eae3ddfff6466688b16a6f921dfb99e466e6)
+++ uspace/lib/c/include/async.h	(revision b76a7329a5e0d6492e93d0011920192b1d80a035)
@@ -42,5 +42,4 @@
 #include <ipc/common.h>
 #include <fibril.h>
-#include <fibril_synch.h>
 #include <sys/time.h>
 #include <atomic.h>
@@ -96,45 +95,10 @@
 } exch_mgmt_t;
 
-/** Session data */
-typedef struct {
-	/** List of inactive exchanges */
-	list_t exch_list;
-	
-	/** Exchange management style */
-	exch_mgmt_t mgmt;
-	
-	/** Session identification */
-	int phone;
-	
-	/** First clone connection argument */
-	sysarg_t arg1;
-	
-	/** Second clone connection argument */
-	sysarg_t arg2;
-	
-	/** Third clone connection argument */
-	sysarg_t arg3;
-	
-	/** Exchange mutex */
-	fibril_mutex_t mutex;
-	
-	/** Number of opened exchanges */
-	atomic_t refcnt;
-} async_sess_t;
-
-/** Exchange data */
-typedef struct {
-	/** Link into list of inactive exchanges */
-	link_t sess_link;
-	
-	/** Link into global list of inactive exchanges */
-	link_t global_link;
-	
-	/** Session pointer */
-	async_sess_t *sess;
-	
-	/** Exchange identification */
-	int phone;
-} async_exch_t;
+/** Forward declarations */
+struct _async_exch;
+struct _async_sess;
+
+typedef struct _async_sess async_sess_t;
+typedef struct _async_exch async_exch_t;
 
 extern atomic_t threads_in_ipc_wait;