diff --git a/src/saveload/saveload.h b/src/saveload/saveload.h
index 77cd3fb354..1ad8850093 100644
--- a/src/saveload/saveload.h
+++ b/src/saveload/saveload.h
@@ -88,7 +88,7 @@ enum SLRefType {
 };
 
 /** Highest possible savegame version. */
-#define SL_MAX_VERSION 255
+#define SL_MAX_VERSION UINT16_MAX
 
 /** Flags of a chunk. */
 enum ChunkType {