diff --git a/CMakeLists.txt b/CMakeLists.txt
index 819e97cec..74f513ec0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -168,6 +168,7 @@ add_compile_definitions(CONTROLLERBUTTONS_T=uint32_t)
 ################################################################################
 add_subdirectory(libultraship ${CMAKE_BINARY_DIR}/libultraship)
 target_compile_options(libultraship PRIVATE "${WARNING_OVERRIDE}")
+target_compile_definitions(libultraship PUBLIC INCLUDE_MPQ_SUPPORT)
 add_subdirectory(ZAPDTR/ZAPD ${CMAKE_BINARY_DIR}/ZAPD)
 add_subdirectory(OTRExporter)
 add_subdirectory(soh)