Index: uspace/app/tester/devmap/devmap1.c
===================================================================
--- uspace/app/tester/devmap/devmap1.c	(revision c7bbd8f8f76acb255644cd7a135ae63b802ee692)
+++ uspace/app/tester/devmap/devmap1.c	(revision 3cc6a5200ed5c174df3efad1870dab86c9c73d13)
@@ -141,5 +141,5 @@
 	req = async_send_2(phone, DEVMAP_DRIVER_REGISTER, 0, 0, &answer);
 
-	retval = ipc_data_write_start(phone, (char *)name, strlen(name) + 1); 
+	retval = ipc_data_write_start(phone, (char *)name, str_size(name) + 1); 
 
 	if (retval != EOK) {
@@ -174,5 +174,5 @@
 	    &answer);
 
-	retval = ipc_data_write_start(driver_phone, name, strlen(name) + 1); 
+	retval = ipc_data_write_start(driver_phone, name, str_size(name) + 1);
 
 	if (retval != EOK) {
@@ -216,5 +216,5 @@
 
 	retval = ipc_data_write_start(driver_phone, (char *)name,
-	    strlen(name) + 1); 
+	    str_size(name) + 1);
 
 	if (retval != EOK) {