diff --git a/src/thread.c b/src/thread.c
index 776f8a237..c1f3acd27 100644
--- a/src/thread.c
+++ b/src/thread.c
@@ -25,6 +25,7 @@
 #include "loopback.h"
 #include "status.h"
 #include "data.h"
+#include "shared.h"
 
 extern hc_global_data_t data;