diff --git a/Makefile.gc b/Makefile.gc
index 278fc54..0ffb6a7 100644
--- a/Makefile.gc
+++ b/Makefile.gc
@@ -26,10 +26,10 @@ INCLUDES 	:=  source/vba source/ngc
 #---------------------------------------------------------------------------------
 
 CFLAGS  = 	-g -O3 -Wall $(MACHDEP) $(INCLUDE) \
-	  		-DNGC -DWORDS_BIGENDIAN -DC_CORE -DFINAL_VERSION \
+	  		-DNGC -DUSE_VM -DWORDS_BIGENDIAN -DC_CORE -DFINAL_VERSION \
 	  		-DSDL -DNO_PNG -DHAVE_ZUTIL_H
 CXXFLAGS	= $(CFLAGS)
-LDFLAGS		= -g $(MACHDEP) -Wl,-Map,$(notdir $@).map -Wl,--cref
+LDFLAGS		= -g $(MACHDEP) -Wl,-Map,$(notdir $@).map
 
 #---------------------------------------------------------------------------------
 # any extra libraries we wish to link with