Index: uspace/lib/c/include/ps.h
===================================================================
--- uspace/lib/c/include/ps.h	(revision faf38b24fb042fe9f1d90d5bb4cc3c9364782df0)
+++ uspace/lib/c/include/ps.h	(revision bdfd3c978d7f3378bdc591ff4fe153a17d5c2ea3)
@@ -45,5 +45,5 @@
 extern size_t get_task_ids(task_id_t *ids, size_t size);
 extern int get_task_info(task_id_t id, task_info_t *info);
-extern int get_task_threads(thread_info_t *infos, size_t size);
+extern size_t get_task_threads(thread_info_t *infos, size_t size);
 
 #endif