diff --git a/support/tools/Burg/Makefile b/support/tools/Burg/Makefile
index c8586aa7eff..bbf5baa66c0 100644
--- a/support/tools/Burg/Makefile
+++ b/support/tools/Burg/Makefile
@@ -6,9 +6,7 @@ EXTRASOURCES = gram.tab.c
 include $(LEVEL)/Makefile.common
 
 gram.tab.c gram.tab.h: gram.yc
-	$(VERB) $(BISON) -d $<
-	$(VERB) mv -f gram.tab.cc gram.tab.c
-	$(VERB) mv -f gram.tab.hc gram.tab.h
+	$(VERB) $(BISON) -o gram.tab.c -d $<
 
 clean::
 	rm -ff gram.tab.h gram.tab.c core* *.aux *.log *.dvi sample sample.c tmp
diff --git a/utils/Burg/Makefile b/utils/Burg/Makefile
index c8586aa7eff..bbf5baa66c0 100644
--- a/utils/Burg/Makefile
+++ b/utils/Burg/Makefile
@@ -6,9 +6,7 @@ EXTRASOURCES = gram.tab.c
 include $(LEVEL)/Makefile.common
 
 gram.tab.c gram.tab.h: gram.yc
-	$(VERB) $(BISON) -d $<
-	$(VERB) mv -f gram.tab.cc gram.tab.c
-	$(VERB) mv -f gram.tab.hc gram.tab.h
+	$(VERB) $(BISON) -o gram.tab.c -d $<
 
 clean::
 	rm -ff gram.tab.h gram.tab.c core* *.aux *.log *.dvi sample sample.c tmp