diff --git a/src/platforms/amd64/linux/syscodes.h b/src/platforms/amd64/linux/syscodes.h
index 5335244..0c4aa1d 100644
--- a/src/platforms/amd64/linux/syscodes.h
+++ b/src/platforms/amd64/linux/syscodes.h
@@ -2,13 +2,13 @@
 
 #include "../../common/types.h"
 
-const UInt8 SYSCODE_READ = 0x00;
-const UInt8 SYSCODE_WRITE = 0x01;
+#define SYSCODE_READ 0x00
+#define SYSCODE_WRITE 0x01
 
-const UInt8 SYSCODE_MEMORY_MAP = 0x09;
+#define SYSCODE_MEMORY_MAP 0x09
 
-const UInt8 SYSCODE_MEMORY_UNMAP = 0x0b;
+#define SYSCODE_MEMORY_UNMAP 0x0b
 
-const UInt8 SYSCODE_NANO_SLEEP = 0x23;
+#define SYSCODE_NANO_SLEEP 0x23
 
-const UInt16 SYSCODE_GET_RANDOM = 0x013e;
+#define SYSCODE_GET_RANDOM 0x013e