Index: uspace/drv/platform/sun4v/sun4v.c
===================================================================
--- uspace/drv/platform/sun4v/sun4v.c	(revision f4cfd271c0ccaaa4d013ab45c31b049ca6f6c328)
+++ uspace/drv/platform/sun4v/sun4v.c	(revision f77c1c90c1f223647872d5cefa2d86f63bc846d7)
@@ -41,4 +41,5 @@
 #include <ddf/log.h>
 #include <errno.h>
+#include <str_error.h>
 #include <ops/hw_res.h>
 #include <ops/pio_window.h>
@@ -228,5 +229,5 @@
 	rc = sysinfo_get_value("niagara.inbuf.address", &paddr);
 	if (rc != EOK) {
-		ddf_msg(LVL_ERROR, "niagara.inbuf.address not set (%d)", rc);
+		ddf_msg(LVL_ERROR, "niagara.inbuf.address not set: %s", str_error(rc));
 		return rc;
 	}
@@ -236,5 +237,5 @@
 	rc = sysinfo_get_value("niagara.outbuf.address", &paddr);
 	if (rc != EOK) {
-		ddf_msg(LVL_ERROR, "niagara.outbuf.address not set (%d)", rc);
+		ddf_msg(LVL_ERROR, "niagara.outbuf.address not set: %s", str_error(rc));
 		return rc;
 	}