diff --git a/src/utility/OsDetection.h b/src/utility/OsDetection.h
index af8896adf..c25d00e37 100644
--- a/src/utility/OsDetection.h
+++ b/src/utility/OsDetection.h
@@ -3,6 +3,7 @@
 
 #if defined __linux__ || defined __linux
 #	define LINUX
+#	include <sys/mman.h>
 #elif defined TARGET_OS_MAC || defined __apple__ || defined __APPLE__
 #	define MACOSX
 #	define _DARWIN_USE_64_BIT_INODE