diff --git a/src/xenia/base/memory_posix.cc b/src/xenia/base/memory_posix.cc
index 1af6c74d8..ea97ff900 100644
--- a/src/xenia/base/memory_posix.cc
+++ b/src/xenia/base/memory_posix.cc
@@ -9,6 +9,7 @@
 
 #include "xenia/base/memory.h"
 
+#include <sys/mman.h>
 #include <unistd.h>
 
 namespace xe {