diff --git a/code/logic/tofu.c b/code/logic/tofu.c
index bc7adaf..7292542 100644
--- a/code/logic/tofu.c
+++ b/code/logic/tofu.c
@@ -199,7 +199,7 @@ void fossil_tofu_print(fossil_tofu_t tofu) {
             printf("%lc", tofu.value.wchar_val);
             break;
         case FOSSIL_TOFU_TYPE_SIZE:
-            printf("%zu", tofu.value.size_val);
+            printf("%z", tofu.value.size_val);
             break;
         case FOSSIL_TOFU_TYPE_BOOL:
             printf("%s", tofu.value.bool_val ? "true" : "false");