diff --git a/src/file_lists.cmake b/src/file_lists.cmake
index 02ee38b090..ae9dbdcc5f 100644
--- a/src/file_lists.cmake
+++ b/src/file_lists.cmake
@@ -745,7 +745,7 @@ set(protoc-gen-upb_hdrs
 set(protoc-gen-upbdefs_srcs
   ${protobuf_SOURCE_DIR}/upb_generator/common.cc
   ${protobuf_SOURCE_DIR}/upb_generator/file_layout.cc
-  ${protobuf_SOURCE_DIR}/upb_generator/protoc-gen-upbdefs.cc
+  ${protobuf_SOURCE_DIR}/upb_generator/reflection/generator.cc
 )
 
 # @//pkg:protoc-gen-upbdefs