diff --git a/tools/Makefile b/tools/Makefile
index 1b8e23d6e14..cb3a35b2a72 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -83,8 +83,8 @@ endif
 # support multi-threads when compile with g++ (gcc) version above 4.1
 openfst-$(OPENFST_VERSION)/.patched: | openfst-$(OPENFST_VERSION)
 	-cd openfst-$(OPENFST_VERSION)/src/include/fst; \
-	patch -p0 -N < ../../../../extras/openfst-$(OPENFST_VERSION).patch;
-	$(CXX) -dumpversion | awk '{if(NR==1 && $$1>"4.1") print "cd openfst-$(OPENFST_VERSION)/src/include/fst; patch -p0 -N < ../../../../extras/openfst_gcc41up.patch"}' | sh -
+	patch -c -p0 -N < ../../../../extras/openfst-$(OPENFST_VERSION).patch;
+	$(CXX) -dumpversion | awk '{if(NR==1 && $$1>"4.1") print "cd openfst-$(OPENFST_VERSION)/src/include/fst; patch -c -p0 -N < ../../../../extras/openfst_gcc41up.patch"}' | sh -
 	touch $@
 
 openfst-$(OPENFST_VERSION): openfst-$(OPENFST_VERSION).tar.gz