1 files changed, 3 insertions, 1 deletions
diff --git a/eval.h b/eval.h
index 8b4a5f6..49101f1 100644
--- a/eval.h
+++ b/eval.h
@@ -2,6 +2,8 @@
 
 #include "ast.h"
 
+#include <stdint.h>
+
 enum TypeKind
 {
     KIND_VOID,
@@ -11,7 +13,7 @@ enum TypeKind
 struct Type
 {
     enum TypeKind kind;
-    long number;
+    int64_t number;
 };
 
 enum RunStatus