1 files changed, 2 insertions, 1 deletions

diff --git a/isa/checker.h b/isa/checker.h
index 332c483..571bbc8 100644
--- a/isa/checker.h
+++ b/isa/checker.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <array>
+#include <cstdint>
 #include <map>
 
 #include "io/model.h"
@@ -41,7 +42,7 @@ struct checker {
     unsigned int link = 0;
     unsigned int mq = 0;
     unsigned int pc = 00200;
-    std::array<unsigned int, NUM_CTLREGS> ctlregs;
+    std::array<std::uint_fast32_t, NUM_CTLREGS> ctlregs;
     iomodel &system;
     instruction_context inst;
     funcmem mem;