diff --git a/src/sim/system.cc b/src/sim/system.cc
index 4e3416e5b0..8185f13e94 100644
--- a/src/sim/system.cc
+++ b/src/sim/system.cc
@@ -45,6 +45,7 @@
 
 #include "arch/remote_gdb.hh"
 #include "arch/utility.hh"
+#include "base/compiler.hh"
 #include "base/loader/object_file.hh"
 #include "base/loader/symtab.hh"
 #include "base/str.hh"