diff --git a/extlib/benz/gc.c b/extlib/benz/gc.c
index f890ca30..7608fbcf 100644
--- a/extlib/benz/gc.c
+++ b/extlib/benz/gc.c
@@ -530,7 +530,6 @@ gc_mark_global_symbols(pic_state *pic)
   M(uDEFINE_LIBRARY); M(uIMPORT); M(uEXPORT); M(uCOND_EXPAND);
   M(uCONS); M(uCAR); M(uCDR); M(uNILP); M(uSYMBOLP); M(uPAIRP);
   M(uADD); M(uSUB); M(uMUL); M(uDIV); M(uEQ); M(uLT); M(uLE); M(uGT); M(uGE); M(uNOT);
-  M(uVALUES); M(uCALL_WITH_VALUES);
 }
 
 #define P(x) gc_mark(pic, pic->x)
diff --git a/extlib/benz/include/picrin.h b/extlib/benz/include/picrin.h
index 5d1c36be..91bb31db 100644
--- a/extlib/benz/include/picrin.h
+++ b/extlib/benz/include/picrin.h
@@ -104,7 +104,6 @@ struct pic_state {
   pic_sym *uDEFINE_LIBRARY, *uIMPORT, *uEXPORT, *uCOND_EXPAND;
   pic_sym *uCONS, *uCAR, *uCDR, *uNILP, *uSYMBOLP, *uPAIRP;
   pic_sym *uADD, *uSUB, *uMUL, *uDIV, *uEQ, *uLT, *uLE, *uGT, *uGE, *uNOT;
-  pic_sym *uVALUES, *uCALL_WITH_VALUES;
 
   pic_value pCONS, pCAR, pCDR, pNILP, pPAIRP, pSYMBOLP, pNOT;
   pic_value pADD, pSUB, pMUL, pDIV, pEQ, pLT, pLE, pGT, pGE;
diff --git a/extlib/benz/state.c b/extlib/benz/state.c
index c7f65526..e29c4304 100644
--- a/extlib/benz/state.c
+++ b/extlib/benz/state.c
@@ -372,8 +372,6 @@ pic_open(pic_allocf allocf, void *userdata)
   U(uGT, ">");
   U(uGE, ">=");
   U(uNOT, "not");
-  U(uVALUES, "values");
-  U(uCALL_WITH_VALUES, "call-with-values");
   pic_gc_arena_restore(pic, ai);
 
   /* system procedures */