diff --git a/src/threads.h b/src/threads.h
index 60df568b8aa3852e351279dbd2b3fa1b881a938c..93251ba6644bcb59a9b90d58d7defb73db1d17f8 100644
--- a/src/threads.h
+++ b/src/threads.h
@@ -288,6 +288,8 @@ void th_cleanup(void);
 #define mt_destroy(X)
 #define THREADS_ALLOW()
 #define THREADS_DISALLOW()
+#define HIDE_GLOBAL_VARIABLES()
+#define REVEAL_GLOBAL_VARIABLES()
 #define th_init()
 #define th_cleanup()
 #define th_init_programs()