$FreeBSD$

--- Modules/resource.c
+++ Modules/resource.c
@@ -327,6 +327,10 @@
     PyModule_AddIntConstant(m, "RUSAGE_CHILDREN", RUSAGE_CHILDREN);
 #endif
 
+#ifdef RUSAGE_THREAD
+    PyModule_AddIntConstant(m, "RUSAGE_THREAD", RUSAGE_THREAD);
+#endif
+
 #ifdef RUSAGE_BOTH
     PyModule_AddIntConstant(m, "RUSAGE_BOTH", RUSAGE_BOTH);
 #endif