diff --git a/lib/cont.c b/lib/cont.c
index 91fb04dc..96ae47ea 100644
--- a/lib/cont.c
+++ b/lib/cont.c
@@ -51,10 +51,10 @@ cont_call(pic_state *pic)
 }
 
 pic_value
-pic_make_cont(pic_state *pic, struct context *cxt, pic_value k, pic_value dyn_env)
+pic_make_cont(pic_state *pic, pic_value k)
 {
   static const pic_data_type cxt_type = { "cxt", NULL };
-  return pic_lambda(pic, cont_call, 3, pic_data_value(pic, cxt, &cxt_type), k, dyn_env);
+  return pic_lambda(pic, cont_call, 3, pic_data_value(pic, pic->cxt, &cxt_type), k, pic->dyn_env);
 }
 
 static pic_value
@@ -64,7 +64,7 @@ pic_cont_callcc(pic_state *pic)
 
   pic_get_args(pic, "l", &f);
 
-  args[0] = pic_make_cont(pic, pic->cxt, pic->cxt->fp->regs[1], pic->dyn_env);
+  args[0] = pic_make_cont(pic, pic->cxt->fp->regs[1]);
   return pic_applyk(pic, f, 1, args);
 }
 
diff --git a/lib/error.c b/lib/error.c
index 6694eb90..250b842a 100644
--- a/lib/error.c
+++ b/lib/error.c
@@ -69,7 +69,7 @@ pic_enter_try(pic_state *pic)
   pic->cxt->ai = pic->ai;
 
   /* call/cc */
-  cont = pic_make_cont(pic, pic->cxt, pic_invalid_value(pic), pic->dyn_env);
+  cont = pic_make_cont(pic, pic_invalid_value(pic));
   handler = pic_lambda(pic, native_exception_handler, 1, cont);
   /* with-exception-handler */
   var = pic_exc(pic);
diff --git a/lib/object.h b/lib/object.h
index e066c7d4..0269ac62 100644
--- a/lib/object.h
+++ b/lib/object.h
@@ -271,8 +271,7 @@ pic_value pic_make_proc_func(pic_state *, pic_func_t);
 pic_value pic_make_record(pic_state *, pic_value type, pic_value datum);
 pic_value pic_record_type(pic_state *pic, pic_value record);
 pic_value pic_record_datum(pic_state *pic, pic_value record);
-struct context;
-pic_value pic_make_cont(pic_state *pic, struct context *cxt, pic_value k, pic_value dyn_env);
+pic_value pic_make_cont(pic_state *pic, pic_value k);
 pic_value pic_make_error(pic_state *, const char *type, const char *msg, pic_value irrs);
 
 struct rope *pic_rope_incref(struct rope *);