Index: uspace/lib/nic/src/nic_driver.c
===================================================================
--- uspace/lib/nic/src/nic_driver.c	(revision 984a9ba2fa05c490a7066737655ed19130c714e8)
+++ uspace/lib/nic/src/nic_driver.c	(revision c124c985b458abc83183812eb63cef12f08694dd)
@@ -1083,5 +1083,5 @@
 				remaining.tv_usec -= wait;
 			}
-			async_usleep(wait);
+			fibril_usleep(wait);
 
 			/* Check if the period was not reset */