diff --git a/source/cache/cache_files.c b/source/cache/cache_files.c
index 8bb22ee5..272454ee 100644
--- a/source/cache/cache_files.c
+++ b/source/cache/cache_files.c
@@ -585,6 +585,9 @@ boolean cache_file_header_verify(
 		return FALSE;
 	}
 
+#ifndef HALO_LINUX
+	/* (the native builds try a cache file whatever build made it, NTSC's
+	01.10.12.2276 included) */
 	if (csstrcmp(header->build, "01.01.14.2342"))
 	{
 		if (fatal)
@@ -602,6 +605,7 @@ boolean cache_file_header_verify(
 
 		return FALSE;
 	}
+#endif
 
 	return TRUE;
 }
diff --git a/source/cache/cache_files_windows.c b/source/cache/cache_files_windows.c
index 745c2045..911dbf6b 100644
--- a/source/cache/cache_files_windows.c
+++ b/source/cache/cache_files_windows.c
@@ -1020,10 +1020,14 @@ static void cache_files_open_cache_files(
 			char *cache_map_name = cached_map_file_get(map_file_index)->header.name;
 
 			cached_map_file_read_header(map_file_index);
+#ifndef HALO_LINUX
+			/* (the native builds keep a copied map whatever build made it;
+			the checksum below still has to match the original's) */
 			if (strcmp(map_file->header.build, CACHE_FILE_BUILD_STRING) != 0)
 			{
 				valid = FALSE;
 			}
+#endif
 			if (cache_file_read_header_from_dvd(cache_map_name, &dvd_header) &&
 				map_file->header.checksum == dvd_header.checksum &&
 				valid)