diff --git a/opt/bignum.c b/opt/bignum.c
index 09c82ded..767d8898 100644
--- a/opt/bignum.c
+++ b/opt/bignum.c
@@ -487,7 +487,7 @@ enum sexp_number_combs {
 };
 
 static int sexp_number_types[] =
-  {0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 2, 3, 0, 0, 0, 0};
+  {0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 2, 3, 0, 0, 0, 0};
 
 static int sexp_number_type (sexp a) {
   return sexp_pointerp(a) ? sexp_number_types[sexp_pointer_tag(a)&15]