diff --git a/src/gausskernel/Makefile b/src/gausskernel/Makefile
index ef68c13e9..c896bf1c9 100644
--- a/src/gausskernel/Makefile
+++ b/src/gausskernel/Makefile
@@ -780,6 +780,7 @@ 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 \