diff --git a/src/arch/x86/utility.hh b/src/arch/x86/utility.hh
index b616886a5..d89e223de 100644
--- a/src/arch/x86/utility.hh
+++ b/src/arch/x86/utility.hh
@@ -61,6 +61,7 @@
 #include "arch/x86/types.hh"
 #include "base/hashmap.hh"
 #include "base/misc.hh"
+#include "cpu/thread_context.hh"
 #include "sim/host.hh"
 
 class ThreadContext;