diff --git a/src/kernel/libroot/posix/malloc/arch-specific.cpp b/src/kernel/libroot/posix/malloc/arch-specific.cpp
index 14f224a50f..c92a63ec62 100644
--- a/src/kernel/libroot/posix/malloc/arch-specific.cpp
+++ b/src/kernel/libroot/posix/malloc/arch-specific.cpp
@@ -41,7 +41,7 @@ status_t release_sem(sem_id id);
 
 int hoardGetThreadID (void)
 {
-  return sys_get_current_thread_id();
+  return find_thread(NULL);
 }