diff --git a/makefiles/Makefile.cpp.mk b/makefiles/Makefile.cpp.mk
index dcd31766a7..09a2615871 100644
--- a/makefiles/Makefile.cpp.mk
+++ b/makefiles/Makefile.cpp.mk
@@ -153,6 +153,7 @@ $(GEN_DIR)/ortools/bop/bop_parameters.pb.h \
 $(GEN_DIR)/ortools/linear_solver/linear_solver.pb.h \
 $(GEN_DIR)/ortools/constraint_solver/assignment.pb.h \
 $(GEN_DIR)/ortools/constraint_solver/demon_profiler.pb.h \
+$(GEN_DIR)/ortools/constraint_solver/local_search_stats.pb.h \
 $(GEN_DIR)/ortools/constraint_solver/routing_enums.pb.h \
 $(GEN_DIR)/ortools/constraint_solver/routing_parameters.pb.h \
 $(GEN_DIR)/ortools/constraint_solver/search_limit.pb.h \