diff --git a/gnu/dist/gcc/config/vax/netbsd.h b/gnu/dist/gcc/config/vax/netbsd.h
index faad820bced7..3d1332986541 100644
--- a/gnu/dist/gcc/config/vax/netbsd.h
+++ b/gnu/dist/gcc/config/vax/netbsd.h
@@ -23,4 +23,4 @@
 
 /* Until they use ELF or something that handles dwarf2 unwinds
    and initialization stuff better.  */
-#define DWARF2_UNWIND_INFO 0
+#undef DWARF2_UNWIND_INFO