diff --git a/hphp/util/parser/rules.mk b/hphp/util/parser/rules.mk
deleted file mode 100644
index 00f4c0a7f..000000000
--- a/hphp/util/parser/rules.mk
+++ /dev/null
@@ -1,27 +0,0 @@
-.PHONY: hphp.tab.cpp
-hphp.tab.cpp: $(PROJECT_ROOT)/src/util/parser/hphp.y
-	@echo "Generating parser code..."
-	export BISON_PKGDATADIR=\
-$(realpath $(EXTERNAL_TOOLS_ROOT))/share/bison
-	$(V)$(EXTERNAL_TOOLS_ROOT)/bin/bison \
-		-p$(YYPREFIX) --verbose --locations -d -o$@ $<
-	@perl -p -i -n -e "s/(T_\w+) = ([0-9]+)/YYTOKEN(\\2, \\1)/" \
-		hphp.tab.hpp
-	@php -r "file_put_contents('hphp.tab.hpp', preg_replace('/\{([ \r\n\t]+YYTOKEN\(([0-9]+),)/s', \"{\n#ifndef YYTOKEN_MIN\n#define YYTOKEN_MIN \$$2\n#endif\$$1\", file_get_contents('hphp.tab.hpp')));"
-	@php -r "file_put_contents('hphp.tab.hpp', preg_replace('/(YYTOKEN\(([0-9]+), T_\w+\)[ \r\n\t]+\};)/s', \"\$$1\n#ifndef YYTOKEN_MAX\n#define YYTOKEN_MAX \$$2\n#endif\n\", file_get_contents('hphp.tab.hpp')));"
-	@perl -p -i -n -e "s/   enum yytokentype/#ifndef YYTOKEN_MAP\n#define YYTOKEN_MAP enum yytokentype\n#define YYTOKEN(num, name) name = num\n#endif\n   YYTOKEN_MAP/" hphp.tab.hpp
-	$(V)if ! diff -q hphp.tab.hpp $(PROJECT_ROOT)/src/util/parser/hphp.tab.hpp &>/dev/null; then \
-		mv -f hphp.tab.hpp $(PROJECT_ROOT)/src/util/parser/; \
-	else \
-		rm -f hphp.tab.hpp; \
-	fi
-	@perl -p -i -n -e "s/first_line/line0/"   $@
-	@perl -p -i -n -e "s/last_line/line1/"    $@
-	@perl -p -i -n -e "s/first_column/char0/" $@
-	@perl -p -i -n -e "s/last_column/char1/"  $@
-	@perl -p -i -n -e "s/union/struct/" $@
-	@perl -p -i -n -e "s/YYSTACK_ALLOC \(YYSTACK_BYTES \(yystacksize\)\);\n/YYSTACK_ALLOC \(YYSTACK_BYTES \(yystacksize\)\);\n        memset(yyptr, 0, YYSTACK_BYTES (yystacksize));\n/" $@
-	@perl -p -i -n -e "s/YYSTACK_RELOCATE \(yyvs_alloc, yyvs\)/YYSTACK_RELOCATE_RESET (yyvs_alloc, yyvs)/" $@
-	@perl -p -i -n -e "s/YYSTACK_FREE \(yyss\)/YYSTACK_FREE (yyss);\n  YYSTACK_CLEANUP/" $@
-
-include $(PROJECT_ROOT)/src/rules.mk