diff --git a/src/llama-mmap.h b/src/llama-mmap.h
index 1da9ecb6..4e5aec3f 100644
--- a/src/llama-mmap.h
+++ b/src/llama-mmap.h
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <cstdint>
 #include <memory>
 #include <vector>