diff --git a/panda/src/dxgsg9/CMakeLists.txt b/panda/src/dxgsg9/CMakeLists.txt
index 1db30265a9..25c2fa1a8a 100644
--- a/panda/src/dxgsg9/CMakeLists.txt
+++ b/panda/src/dxgsg9/CMakeLists.txt
@@ -40,7 +40,7 @@ add_component_library(p3dxgsg9 SYMBOL BUILDING_PANDADX
   ${P3DXGSG9_HEADERS} ${P3DXGSG9_SOURCES})
 target_link_libraries(p3dxgsg9 p3windisplay panda
   PKG::CG PKG::DX9)
-target_compile_definitions(p3dxgsg9 PRIVATE USE_GENERIC_DXERR_LIBRARY) # FIXME
+target_compile_definitions(p3dxgsg9 PUBLIC USE_GENERIC_DXERR_LIBRARY) # FIXME
 
 if(NOT BUILD_METALIBS)
   install(TARGETS p3dxgsg9 DESTINATION lib RUNTIME DESTINATION bin)