diff --git a/games/SRB2/files/patch-src_byteptr.h b/games/SRB2/files/patch-src_byteptr.h
new file mode 100644
index 000000000000..b76da911f6ba
--- /dev/null
+++ b/games/SRB2/files/patch-src_byteptr.h
@@ -0,0 +1,10 @@
+--- src/byteptr.h.orig	2021-10-10 01:56:02 UTC
++++ src/byteptr.h
+@@ -83,6 +83,7 @@
+ //
+ // Write a value to a little-endian, unaligned destination.
+ //
++#include "doomtype.h"
+ FUNCINLINE static ATTRINLINE void writeshort(void *ptr, INT32 val)
+ {
+ 	SINT8 *cp = ptr;