diff --git a/src/version.h b/src/version.h
index 207db3816..f7c7da4be 100644
--- a/src/version.h
+++ b/src/version.h
@@ -96,7 +96,7 @@ const char *GetVersionString();
 // This is so that derivates can use the same savegame versions without worrying about engine compatibility
 #define GAMESIG "GZDOOM"
 #define BASEWAD "gzdoom.pk3"
-#define OPTIONALWAD "gzdoom_optional_assets.pk3"
+#define OPTIONALWAD "zd_extra.pk3"
 #define BASESF "gzdoom.sf2"
 
 // More stuff that needs to be different for derivatives.
diff --git a/wadsrc_optionalassets/CMakeLists.txt b/wadsrc_optionalassets/CMakeLists.txt
index 42716f6a3..57f77a82c 100644
--- a/wadsrc_optionalassets/CMakeLists.txt
+++ b/wadsrc_optionalassets/CMakeLists.txt
@@ -1,3 +1,3 @@
 cmake_minimum_required( VERSION 2.8.7 )
 
-add_pk3(gzdoom_optional_assets.pk3 ${CMAKE_CURRENT_SOURCE_DIR}/static)
+add_pk3(zd_extra.pk3 ${CMAKE_CURRENT_SOURCE_DIR}/static)