diff --git a/core/memory/arena.cpp b/core/memory/arena.cpp
index b3de55a..e8e4e0e 100644
--- a/core/memory/arena.cpp
+++ b/core/memory/arena.cpp
@@ -1,6 +1,6 @@
 #include "arena.h"
 #include "Base/Assert.h"
-#include <sys/mman.h> // Required for mmap and MAP_FAILED
+#include "sys/mman.h" // Required for mmap and MAP_FAILED
 
 // Memory::Arena Memory::arena_init() {
 //     // TODO(GloriousTaco): The line below is stupidly unsafe. Replace malloc with mmap() and check the return value.