diff --git a/src/gausskernel/Makefile b/src/gausskernel/Makefile
index 5524d0c49..143324e75 100644
--- a/src/gausskernel/Makefile
+++ b/src/gausskernel/Makefile
@@ -776,6 +776,7 @@ maintainer-clean: distclean
 	      bootstrap/bootscanner.cpp \
 	      ../common/backend/parser/gram.cpp \
 	      ../common/backend/parser/gram.hpp \
+	      ../common/backend/parser/hint_gram.cpp \
 	      ../common/backend/parser/hint_gram.hpp \
 	      ../common/backend/parser/scan.cpp \
 	      ../common/backend/catalog/schemapg.h \