diff --git a/config/CONFIG.Vx.pc486 b/config/CONFIG.Vx.pc486
index 236780c05..c95ebdf99 100644
--- a/config/CONFIG.Vx.pc486
+++ b/config/CONFIG.Vx.pc486
@@ -10,7 +10,7 @@ CMPLR_SUFFIX = 386
 #   $(VX_DIR)/$(HOST_ARCH).$(ARCH_CLASS)/bin
 ARCH_CLASS = pc486
 
-ARCH_DEP_CPPFLAGS = -DCPU=I80486 -DCPU_FAMILY=I80x86 -D_X86_ 
+ARCH_DEP_CPPFLAGS = -DCPU=I80486 -D_X86_ 
 ARCH_DEP_CFLAGS = -m486
 ARCH_DEP_CXXFLAGS += -x 'c++' 
 ARCH_DEP_CFLAGS += -fno-defer-pop