Index: uspace/drv/char/ski-con/ski-con.c
===================================================================
--- uspace/drv/char/ski-con/ski-con.c	(revision c309b18982aa8ed31fd796bcd813732f5f312e6e)
+++ uspace/drv/char/ski-con/ski-con.c	(revision 908d6349ec77726e8eb78ea800c7b5f2844c3dcb)
@@ -31,4 +31,5 @@
  */
 
+#include <async.h>
 #include <ddf/driver.h>
 #include <ddf/log.h>
@@ -149,5 +150,5 @@
 		}
 
-		fibril_usleep(POLL_INTERVAL);
+		async_usleep(POLL_INTERVAL);
 	}
 
Index: uspace/drv/char/sun4v-con/sun4v-con.c
===================================================================
--- uspace/drv/char/sun4v-con/sun4v-con.c	(revision c309b18982aa8ed31fd796bcd813732f5f312e6e)
+++ uspace/drv/char/sun4v-con/sun4v-con.c	(revision 908d6349ec77726e8eb78ea800c7b5f2844c3dcb)
@@ -149,5 +149,5 @@
 
 	while (con->input_buffer->read_ptr == con->input_buffer->write_ptr)
-		fibril_usleep(POLL_INTERVAL);
+		async_usleep(POLL_INTERVAL);
 
 	p = 0;