diff --git a/src/other/b.b b/src/other/b.b
index 57a7a27..896b862 100644
--- a/src/other/b.b
+++ b/src/other/b.b
@@ -20,7 +20,7 @@
 */
 
 main() {
-  extrn symtab, eof, ns, nerror;
+  extrn symtab, eof, ns;
 
   while (!eof) {
     ns = symtab + 51;
@@ -30,7 +30,7 @@ main() {
 }
 
 lookup() {
-  extrn symtab, symbuf, eof, ns, nerror;
+  extrn symtab, symbuf, eof, ns;
   auto np, sp, rp;
 
   rp = symtab;
@@ -368,8 +368,7 @@ loop:
     expr(15);
     if (symbol() != 5)
       error('[]');
-    gen('b',12); /* badd */
-    gen('u',3); /* uind */
+    gen('n',4); /* vector */
     goto loop;
   }
   if (o==6) { /* ( */
diff --git a/tools/b.c b/tools/b.c
index bc340b4..cbb535b 100644
--- a/tools/b.c
+++ b/tools/b.c
@@ -53,7 +53,7 @@ xflush() {
 #define flush xflush
 
 main(int argc, char **argv) {
-  extern symtab[], eof, *ns, nerror;
+  extern symtab[], eof, *ns;
   extern fin, fout;
 
   if (argc > 1) {
@@ -77,7 +77,7 @@ main(int argc, char **argv) {
 }
 
 int *lookup() {
-  extern symtab[], symbuf[], eof, *ns, nerror;
+  extern symtab[], symbuf[], eof, *ns;
   auto *np, *sp, *rp;
 
   rp = symtab;
@@ -415,8 +415,7 @@ loop:
     expr(15);
     if (symbol() != 5)
       error('[]');
-    gen('b',12); /* badd */
-    gen('u',3); /* uind */
+    gen('n',4); /* vector */
     goto loop;
   }
   if (o==6) { /* ( */