diff --git a/src/emulator/memory_region.hpp b/src/emulator/memory_region.hpp
index 486bb27f..cdf25ce9 100644
--- a/src/emulator/memory_region.hpp
+++ b/src/emulator/memory_region.hpp
@@ -5,7 +5,7 @@
 struct basic_memory_region
 {
     uint64_t start{};
-    size_t length{};
+    size_t length{}; // uint64_t?
     memory_permission permissions{};
 };