Index: uspace/lib/hound/src/client.c
===================================================================
--- uspace/lib/hound/src/client.c	(revision d120133ee86d737fdfb6746d53beb5cfd4d4c243)
+++ uspace/lib/hound/src/client.c	(revision e5bc9120ed82e9b8b88a9c71d1de105d75a6ff1e)
@@ -36,4 +36,5 @@
 #include <adt/list.h>
 #include <errno.h>
+#include <inttypes.h>
 #include <loc.h>
 #include <str.h>
@@ -103,5 +104,6 @@
 	if (new_context) {
 		char *cont_name;
-		int ret = asprintf(&cont_name, "%llu:%s", task_get_id(), name);
+		int ret = asprintf(&cont_name, "%" PRIu64 ":%s",
+		    task_get_id(), name);
 		if (ret < 0) {
 			free(new_context);